8 research outputs found
Bacteriophage Plaques: Theory and Analysis
- Author
- A. Eisenstark
- A. Mayr-Harting
- A.A. Qanber
- A.D. Hershey
- A.D. Hershey
- A.D. Hershey
- A.D. Hershey
- A.H. Doermann
- A.L. Koch
- C.F. Schnitzlein
- C.L. Burch
- D. Lillehaug
- D. Stopar
- D.A. Kaplan
- F. d’Hérelle
- G.S. Stent
- H. Hadas
- J. Fort
- J. Fort
- J. Yin
- J. Yin
- J. Yin
- J. Yin
- J.J. Bronfenbrenner
- J.J. Bull
- J.J. Dennehy
- K. Carlson
- K. Carlson
- L. Goodridge
- L. You
- L.J. Alvarez
- M. Breitbart
- M. McConnell
- M.A. Conkling
- M.H. Adams
- S.M. Krone
- S.T. Abedon
- S.T. Abedon
- S.T. Abedon
- S.T. Abedon
- S.T. Abedon
- S.T. Abedon
- S.T. Abedon
- V. Ortega-Cejas
- W.J. Elford
- Y. Lee
- Y. Lee
- Y. Lee
- Publication venue
- 'Springer Science and Business Media LLC'
- Publication date
- 01/01/2009
- Field of study
Transitions in Understanding of RNA Viruses: A Historical Perspective
- Author
- A. Airaksinen
- A. Arias
- A. Flamand
- A. Gierer
- A. Granoff
- A. Granoff
- A. Kawai
- A. Portner
- A.B. Sabin
- A.D. Hershey
- A.M. King
- B. Dietzschold
- B.A. Brown
- B.K. Notay
- B.K. Rima
- B.N. Fields
- B.N. Fields
- C. Briones
- C. Escarmis
- C. Escarmis
- C. Escarmis
- C. González-López
- C. Schmaljohn
- C.D. Ward
- C.G. Cupples
- C.H. Lee
- C.K. Biebricher
- C.K. Biebricher
- C.K. Biebricher
- C.K. Biebricher
- C.M. Ruiz-Jarabo
- C.M. Ruiz-Jarabo
- C.M. Ruiz-Jarabo
- C.R. Pringle
- C.R. Pringle
- C.R. Pringle
- D. Baltimore
- D. Iwanowski
- D. Maag
- D. Zimmern
- D.A. Steinhauer
- D.A. Steinhauer
- D.A. Steinhauer
- D.A. Steinhauer
- D.B. Smith
- D.C. Reanney
- D.K. Clarke
- D.K. Clarke
- D.R. Mills
- E. Batschelet
- E. Domingo
- E. Domingo
- E. Domingo
- E. Domingo
- E. Domingo
- E. Domingo
- E. Domingo
- E. Domingo
- E. Domingo
- E. Domingo
- E. Lazaro
- E. Lazaro
- E. Wimmer
- E.A. Duarte
- E.A. Duarte
- E.A. Duarte
- E.F. Zimmerman
- E.J. Rhozon
- F. D’Herelle
- F. Gebauer
- F. Loeffler
- F. Sobrino
- F.M. Burnet
- G. Appleyard
- G.F. Gause
- G.K. Hirst
- G.M. Findlay
- G.P. Berry
- H. Frankel-Conrat
- H. Frankel-Conrat
- H.J. Eggers
- H.J. Muller
- I. Haruna
- I.S. Novella
- I.S. Novella
- I.S. Novella
- I.S. Novella
- J. Enders
- J. Meinkoth
- J. Quer
- J. Quer
- J. Swetina
- J.A. Mudd
- J.B. Buist
- J.C. Torre De la
- J.C. Torre De la
- J.D. Watson
- J.F. Enders
- J.H. Strauss
- J.H. Strauss
- J.J. Holland
- J.J. Holland
- J.J. Holland
- J.J. Holland
- J.J. Holland
- J.J. Holland
- J.J. Holland
- J.J. Holland
- J.J. Holland
- J.J. Holland
- J.M. Coffin
- J.M. Ramseur
- J.S. Youngner
- J.W. Drake
- J.W. Drake
- J.W. Drake
- J.W. Drake
- K. Horiuchi
- K.W. Mundry
- L. Chao
- L. Pasteur
- L. Roux
- L. Roux
- L. Valen Van
- L.A. Loeb
- L.O. Kunkle
- M. Eigen
- M. Eigen
- M. Eigen
- M. Eigen
- M. Eigen
- M. Eigen
- M. Popescu
- M. Theiler
- M.W. Beijerinck
- N. Ledinko
- N. Nathanson
- N. Rohde
- N. Takeda
- N.P. Salzman
- O.M. Kew
- O.M. Kew
- O.T. Avery
- O.T. Preble
- P. Palese
- P. Schuster
- P.D. Cooper
- R. Ahmed
- R. Dulbecco
- R.C. Valentine
- R.E. Shope
- R.G. Webster
- R.G. Webster
- R.G. Webster
- R.H. Doi
- R.I. Carp
- R.M. Franklin
- R.R. Wagner
- S. Crotty
- S. Crotty
- S. Halle
- S. Spiegelman
- S.C. Weaver
- S.E. Luria
- S.E. Pincus
- S.J. Schrag
- S.T. Nichol
- T.E. Rawlins
- V. Meulen Ter
- V.K. Pathak
- W.E. Severson
- W.J. Elford
- W.J. Elford
- W.M. Stanley
- Y. Nishiyama
- Y. Nishiyama
- Publication venue
- 'Springer Science and Business Media LLC'
- Publication date
- 01/01/2006
- Field of study
References
- Author
- Alderete J.
- Badenhop C.T.
- Bear J.
- Bliesner W.C.
- Bocquet P.C.
- Bower J.P.
- Campbell J.S.
- Carman P.C.
- Ch E.
- Chase G.G.
- Cheap D.W.
- Conner W.C.
- Corte H.L.
- Dickenson C.
- Dodson C.T.J.
- Dullien F.A.L.
- Eleftherakis J.G.
- Elford W.J.
- Ergun S.
- Fitch R.C.
- Francis T.
- Grant D.
- Grant D.C.
- Green L.
- Hofmann F.
- Hong I.T.
- Jaroszczyk T.
- Johnson B.R.
- Johnson E.M.
- Johnson J.N.
- Johnston P.R.
- Johnston P.R.
- Johnston P.R.
- Johnston P.R.
- Johnston P.R.
- Johnston P.R.
- Johnston P.R.
- Johnston P.R.
- Johnston P.R.
- Johnston P.R.
- Johnston P.R.
- Johnston P.R.
- Jornitz M.
- Leahy T.J.
- Liu B.Y.H.
- Macdonald I.F.
- Malchesky P.S.
- McKinnon B.T.K.
- Meltzer T.H.
- Meltzer T.H.
- Meyer B.A.
- Miller B.
- Monson D.R.
- Norquist R.
- Omokawa S.
- Oulman C.S.
- Piekaar H.W.
- Pierce M.
- Porter M.C.
- Purchas D.B.
- Remiarz R.
- Reti A.R.
- Rosenstein N.D.
- Rubow K.L.
- Sampson W.W.
- Scheidegger A.
- Schroeder H.G.
- Simpson K.L.
- Special Technical Publication
- Sueoka A.
- Suthar A.
- Tanny G.B.
- Tiller F.M.
- Tiller F.M.
- Trottier R.A.
- VanOsdell D.
- Verdegan B.M.
- Verdegan B.M.
- Wallhäusser K.H.
- Washburn E.W.
- Werynaski A.
- Willis M.S.
- Worthy W.
- Wrasidlo W.
- Yukawa H.
- Publication venue
- 'Informa UK Limited'
- Publication date
- Field of study
Ownership versus competition: Efficiency in public enterprise
- Author
- A. Boardman
- A. Breton
- A. Bruce
- A. Charnes
- A. Cosh
- A. Picot
- A.E. Boardman
- A.J. Lee
- A.O. Krueger
- A.R. Vining
- A.R. Vining
- A.T. Coughlan
- A.Y. Lewin
- B. Branch
- B. Hindley
- B.E. Lindsay
- B.J. Campsey
- B.J. Stevens
- B.P. Pashigian
- C. Shapiro
- C. Whitehead
- C.A. Glassman
- C.E. Bishop
- C.G. Holderness
- C.J. Dahlman
- C.K. Rowley
- C.M. Lindsay
- C.R. Plott
- C.W. Bays
- D. Bails
- D. Flath
- D. Hensher
- D. Larcker
- D.C. Mueller
- D.G. Davies
- D.G. Davies
- D.G. Davies
- D.G. Davies
- D.P. Qualls
- D.R. Kamerschen
- D.R. Pescatrice
- D.S. Krause
- D.W. Blair
- D.W. Caves
- D.W. Caves
- D.W. Gillen
- E.C. Elford
- E.D. Smith
- E.G. Furubotn
- E.R. Becker
- E.S. Savas
- Economic Council of Canada
- F.M. Fisher
- F.M. Fisher
- F.M. Scherer
- F.R. Edwards
- G. Madden
- G. Tullock
- G. Tullock
- G.A. Jarrell
- G.J. Stigler
- G.J. Stigler
- G.L. Salamon
- G.S. Becker
- G.S. Becker
- G.W. Wilson
- H. Averch
- H. Demsetz
- H. Hill
- H. Leibenstein
- H. Leibenstein
- H.E. Frech III
- H.E. Frech III
- H.E. Frech III
- H.E. Frech III
- H.K. Radice
- H.M. Kitchen
- H.P. Tuckman
- I. Wallis
- I.N. Fisher
- J. Burton
- J. Finsinger
- J. Lawarrée
- J. Palmer
- J. Palmer
- J. Pucher
- J. Pucher
- J. Tirole
- J. Vickers
- J.-L. Migue
- J.A. Kay
- J.A. Yunker
- J.B. Warner
- J.C. Coffee Jr.
- J.C. Robinson
- J.J. Boland
- J.L. Bothwell
- J.M. Buchanan
- J.N. Collins
- J.P. Palmer
- J.P. Palmer
- J.P. Palmer
- J.P. Shelton
- J.R. McKean
- J.S. Coleman
- J.W. Elliot
- J.Y. Kamin
- K. Hartley
- K.A. Carroll
- K.D. Freeman
- K.J. Boudreaux
- K.R. Mackay
- K.S. Kim
- K.W. Clarkson
- L. Alessi De
- L. Alessi De
- L.G. Hrebiniak
- L.G. Neuberg
- M. Schlesinger
- M. Stano
- M. Stano
- M.A. Ayub
- M.A. Crew
- M.G. Kirby
- M.G. Kirby
- M.G. Kirby
- M.S. Weisbach
- O.E. Williamson
- P. Dodd
- P. Holl
- P. Holl
- P. Kemper
- P. Steer
- P. Weber
- P.C. Mann
- P.C. Mann
- P.E. Hart
- P.G. Toumanoff
- P.H. Aranson
- P.J. Forsyth
- P.J. Forsyth
- P.J. Thonet
- R. Ahlbrandt Jr.
- R. Funkhouser
- R. Färe
- R. Jacobson
- R. Larner
- R. Marris
- R. Millward
- R. Morck
- R. Pryke
- R. Sorensen
- R. Wintrobe
- R.A. McGuire
- R.A. Meyer
- R.A. Nelson
- R.A. Posner
- R.D. Tollison
- R.E. Herzlinger
- R.E. McCormick
- R.F. Ware
- R.H. Myers
- R.I. Schulz
- R.J. Monsen
- R.J. Murnane
- R.M. Spann
- R.V. Pattison
- R.W. Poole Jr.
- S. Brooks
- S. Domberger
- S. Feigenbaum
- S. Martin
- S. Peltzman
- S. Peltzman
- S. Perelman
- S.A. Morrison
- S.A. Morrison
- S.C. Renn
- S.E. Atkinson
- S.G. Levin
- S.J. Grossman
- S.L. White
- S.P. Neun
- T.E. Borcherding
- T.E. Borcherding
- T.G. Moore
- T.H. Bruggink
- T.H. Hannan
- T.H. Hannan
- T.J. Dilorenzo
- W. Buijink
- W. Hsaio
- W. Rushing
- W.A. Jordan
- W.A. McEachern
- W.A. Niskanen
- W.C. Mitchell
- W.D. Morgan
- W.F. Long
- W.G. Shepherd
- W.J. Baumol
- W.J. Pier
- W.J. Primeaux
- W.J. Primeaux Jr.
- W.M. Crain
- W.M. Crain
- W.W. Pommerehne
- W.Z. Hirsch
- Y. Amihud
- Y. Amihud
- Y. Amihud
- Publication venue
- 'Springer Science and Business Media LLC'
- Publication date
- Field of study
Long-term preservation of cells and tissues: a review.
- Author
- Ashwood-Smith M.J.
- Ashwood-Smith M.J.
- Baldini M.
- Barnes D.W.H.
- Berg van den
- Berg van den L.
- Billingham R.E.
- Bradley T.R.
- Bricka M.
- Bronson W.R.
- Callow L.L.
- Cavins J.A.
- Cavins J.A.
- chloride Sodium
- Cohen P.
- Collins W.E.
- D E Pegg
- Daw A.
- Diller K.R.
- Djerassi I.
- Dougherty R.M.
- Elford B.C.
- Farrant J.
- Farrant J.
- Farrant J.
- Farrant J.
- Farrant J.
- Farrant J.
- Farrant J.
- Greaves R.I.N.
- Greenberg S.
- Grieff D.
- Gye W.E.
- Handin R.I.
- Hauschka T.S.
- Hayes A.R.
- Huggins C.E.
- Huntsman R.G.
- Ising U.
- Jellinek H.H.G.
- Karger Basle
- Knight S.C.
- Lee D.
- Leibo S.P.
- lossifides I.
- Lovelock J.E.
- Lovelock J.E.
- Lovelock J.E.
- Lowenthal R.M.
- Luyet B.J.
- Lyons J.M.
- Mazur P.
- Mazur P.
- Mazur P.
- Mazur P.
- McEntegart M.G.
- Melnick J.L.
- Meryman H.T.
- Meryman H.T.
- Meynell G.G.
- Mieth H.
- Morris G.J.
- Muggleton P.W.
- Murphy S.
- Nash T.
- O'Neill P.
- Parkes A.S.
- Parkes A.S.
- Pegg D.E.
- Pegg D.E.
- Pegg D.E.
- Pegg D.E.
- Pegg P.J.
- Persidsky M.D.
- Polge C.
- Polge C.
- Polge C.
- Porterfield J.S.
- Postgate J.R.
- Putten L.M.
- Pyle H.M.
- Rowe A.W.
- Scherer W.F.
- Scott W.J.
- Smith A.U.
- Smith A.U.
- Smith A.U.
- Smith A.U.
- Smith E.R.
- Strumia M.M.
- Thorp. P.E.
- Valeri C.R.
- Vallejos C.
- Walter C.A.
- Weiner W.
- Whittingham D.G.
- Wilmut I.
- Woodburn M.J.
- Woolgar A.E.
- Publication venue
- 'BMJ'
- Publication date
- Field of study
Airborne Microorganisms From Livestock Production Systems and Their Relation to Dust
- Author
- Adams D.J.
- Andersen A.A.
- AndrÉ J. A. Aarnink
- Baird-Parker A.C.
- Benbough J.E.
- Berendt R.F.
- Brown J.L.
- Cambra-Lopez M.
- Chiba L.I.
- Cho J.G.
- Clark P.C.
- Cox C.S.
- Cox C.S.
- Cox C.S.
- Cox C.S.
- Cray W.C.
- Curtis S.E.
- de Jong J.C.
- de Mik G.
- Dennis P.J.
- Donaldson A.I.
- Donham K.J.
- Doyle M.P.
- Doyle M.P.
- Druett H.A.
- Dubovi E.J.
- Ehrlich R.
- Ehrlich R.
- Elazhary M.A.
- Elford W.J.
- European Commission
- European Commission
- European Commission
- European Commission
- Gailiunas P.
- Gibson C.F.
- Giese A.C.
- Gore A.M.
- Gray J.T.
- Handley B.A.
- Hartung J.
- Hatch M.T.
- Heindel T.H.
- Hermann J.R.
- Hess G.E.
- Ijaz M.K.
- James A.C.
- Janni K.A.
- Jones C.D.
- Kesavan J.S.
- Kim J.G.
- Kim K.Y.
- Kloos W.E.
- Kournikakis B.
- Lai H.T. L.
- Larson E.W.
- Lighthart B.
- Lighthart B.
- Lippmann M.
- Locey K.J.
- Lyngtveit T.
- Mart C. M. De Jong
- Matkovic K.
- Mayhew C.J.
- McCambridge J.
- Nicks B.
- Oliver J.D.
- Peter W. G. Groot Koerkamp
- Phillips P.A.
- Prescott L.M.
- Rabey F.
- Radon K.
- Rosentrater K.
- Roy D.
- Ruiz-Palacios G.M.
- Saleh M.
- Sattar S.A.
- Schoenbaum M.A.
- Scott D.B. M.
- Seedorf J.
- Shen T.T.
- Shipe E.L.
- Songer J.R.
- Stewart R.H.
- Stewart S.L.
- Strasters K.C.
- Tao X.
- Theunissen H.J.
- Thomson C.M.
- Thorne P.S.
- Topisirovic G.
- Tyler M.E.
- Tyler M.E.
- U.S. Environmental Protection Agency
- U.S. Environmental Protection Agency
- U.S. Environmental Protection Agency
- Vucemilo M.
- Welford R.A.
- Wells W.F.
- Won W.D.
- Wright D.N.
- Wright D.N.
- Yang Zhao
- Yoon I.J.
- Yoon K.J.
- Zeitler M.H.
- Publication venue
- 'Informa UK Limited'
- Publication date
- Field of study
Microgels-Intramolecularly CrossĂĽnked Macromolecules with a Globular Structure
- Author
- A. Kashihara
- A. Kohler
- A. Matsumoto
- A. Matsumoto
- A. Matsumoto
- A. Neumann
- A. Okamoto
- A. Toussaint
- A.C. Shah
- A.C. Shah
- A.G. Mikos
- A.G. Mikos
- A.I. Medalia
- A.J. Backhouse
- A.K. Luthra
- A.N. Gent
- A.N.J. Heyn
- A.R. Alcantara
- A.R. Alcantara
- A.R. Schultz
- A.V. Podalinskij
- B. Kleiner
- B. Soper
- B. Walczynski
- B.E. Rodriguez
- B.H. Zimm
- B.T. Storey
- C. Aso
- C. Decker
- C. Holtzscherer
- C. Luca
- C. Price
- C. Sarmoria
- C. Walling
- C. Wu
- C.L. Sieglaff
- C.W. Macosko
- C.W.A. Bromley
- D. Kunz
- D. Kunz
- D. KĂĽhnle
- D. KĂĽhnle
- D. Lim
- D. Stauffer
- D.C. Blackley
- D.H. Solomon
- D.H. Solomon
- D.J. Worsfold
- D.J. Worsfold
- D.J.P. Harrison
- D.M. Solomon
- D.R. Bauer
- D.R. Miller
- D.T. Landin
- D.W.J. Osmond
- E. Däbritz
- E. Schmidt
- E. Trommsdorf
- E. Zurkova
- E.G. Bobalek
- F. Candau
- F. Svec
- F. Svec
- F.A. Taromi
- F.B. Boettcher
- G Walz
- G. Allen
- G. Beinert
- G. Hild
- G. Lutringer
- G. Popov
- G.A. Mortimer
- G.F. D’Alelio
- G.G. Cameron
- G.H. Ma
- G.V. Schulz
- H. Bauer
- H. Baumann
- H. Baumann
- H. Chen
- H. Eschwey
- H. Eschwey
- H. Galina
- H. Galina
- H. Galina
- H. Hata
- H. Hayakawa
- H. Jacobelli
- H. Kast
- H. Kast
- H. Kast
- H. Kawaguchi
- H. Kiryu
- H. Muramoto
- H. Shiozaki
- H. Staudinger
- H. Staudinger
- H. Tobita
- H. Tobita
- H. Tobita
- H. Tobita
- H. Tobita
- H. Tobita
- H. Wesslau
- H.C. Brown
- H.J. Hul van den
- H.J. Hul van den
- H.J. Naghash
- I. Capek
- I. Capek
- I. Capek
- I. Capek
- I. Piirma
- I.I. Tverdokhlebova
- J. Kalal
- J. Korav
- J. Malinsky
- J. Pearson
- J. Porath
- J. Seidl
- J. Zabransky
- J.C. Hiller
- J.G. Kloosterboer
- J.G. Kloosterboer
- J.H. Schulman
- J.K. Fink
- J.L. Gardon
- J.L. Spouge
- J.M. Makhlouf
- J.P. Davey
- J.P. Dixon
- J.R. Millar
- J.R. Okasha
- J.R. Purdon
- J.R. Purdon
- K. Dusek
- K. Dusek
- K. Dusek
- K. Dusek
- K. Dusek
- K. Dusek
- K. Dusek
- K. Dusek
- K. Dusek
- k. Dusek
- K. Dusek
- K. Horie
- K. Ishii
- K. Ishii
- K. Ishizu
- K. Ishizu
- K. Ishizu
- K. Ishizu
- K. Ishizu
- K.E.J. Barret
- K.S. Anseth
- K.S. Anseth
- K.S. Kim
- L. Gallacher
- L. Minnema
- L. Mrkvickova
- L. Nicolas
- L. Pille
- L. Pille
- L.H. Bauer
- L.H. Cragg
- L.J. Boggs
- L.K. Bi
- M. Alba
- M. Antonietti
- M. Antonietti
- M. Antonietti
- M. Beylen Van
- M. Gordon
- M. Gordon
- M. Gordon
- M. Hoffmann
- M. Miyata
- M. Morton
- M. Nomura
- M. Pons
- M. Rogozinski
- M. Schmidt
- M. Stickler
- M. Szwarc
- M. Szwarc
- M. Szwarc
- M. Szwarc
- M. Yabuta
- M. Yabuta
- M.C.A. Donkersloot
- M.I. Karyakina
- M.R. Kaplan
- M.R. Rambler
- M.S. Chatta
- M.S. Wolfe
- M.S. Wolfe
- M.V. Smoluchowski
- M.V. Smoluchowski
- N.A. Dotson
- N.A. Dotson
- O. Okay
- O. Okay
- O. Okay
- O. Okay
- O. Okay
- O. Okay
- O. Okay
- O. Okay
- O. Okay
- O. Okay
- O. Okay
- O. Okay
- O. Okay
- O. Okay
- O.D.M. Kiminta
- O.W. Webster
- O.W. Webster
- P. Bury
- P. Ehrlich
- P. Lang
- P. Lutz
- P. Rempp
- P.E.M. Allen
- P.F. Rempp
- P.J. Flory
- P.J. Flory
- P.K. Dhal
- P.W. Kwant
- R. Bansil
- R. Buchdahl
- R. Epton
- R. Feinauer
- R. Marquart
- R. Michels
- R. Saito
- R. Saito
- R.C.P. Cubbon
- R.M. Ziff
- R.M. Ziff
- R.N. Haward
- R.N. Young
- R.P. Foss
- R.S. Whitney
- S. Bywater
- S. Ishikura
- S. Ishikura
- S. Ishikura
- S. Ishikura
- S. Loshaek
- S. Yamazaki
- S. Zhu
- S. Zhu
- S.G. Vengerowskaya
- S.L. Rosen
- S.R. Broadbent
- S.S. Davis
- T Tsuruta
- T. Aihara
- T. Batzilla
- T. Fukuda
- T. Holt
- T. Sawai
- T. Yagi
- T.E. Lipatova
- T.E. Lipatova
- T.W. Wilson
- U. Flammer
- U. Seitz
- U. Seitz
- U. Seitz
- V.A. Shashoua
- V.E. Shashoua
- V.N. Kulnetzev
- Vanderhoff
- W. Beer
- W. Burchard
- W. Funke
- W. Funke
- W. Funke
- W. Funke
- W. Funke
- W. Funke
- W. Funke
- W. Funke
- W. Funke
- W. Funke
- W. Funke
- W. Heitz
- W. Kuhn
- W. Obrecht
- W. Obrecht
- W. Obrecht
- W. Obrecht
- W. Obrecht
- W. Simpson
- W. Simpson
- W. Straehle
- W. Xia
- W.A. Schulze
- W.H. Carothers
- W.H. Li
- W.H. Li
- W.H. Stockmayer
- W.H. Stockmayer
- W.J. Elford
- W.L. Sederel
- W.O. Baker
- W.S. Bahary
- W.V. Smith
- X. Wang
- Y. Huang
- Y. Koshiro
- Y. Mizutani
- Y. Nagasaki
- Y. Nitadori
- Y. Yu
- Y. Yu
- Y.Y. Chiu
- Y.Z. Yu
- Z. Zhu
- Publication venue
- 'Springer Science and Business Media LLC'
- Publication date
- Field of study