A Desk top mapping game

Ope

A Guide to the geology of the Dundee area

Bibliography: p. 33

Quaternary glaciations in Illinois

Ope

Strippable coal reserves of Illinois : part 5A, Fulton, Henry, Knox, Peoria, Stark, Tazewell, and parts of Bureau, Marshall, Mercer, and Warren counties

Ope

Guide leaflet, Mt. Sterling area : Brown, Adams, Pike, and Schuyler Counties, Mt. Sterling, Meredosia, Rushville, and Augusta 15-minute quadrangles

Cover title."Geological science field trip.""September 25, 1971."Host: Brown County Community High School

A guide to the geology of the Farmer City area, DeWitt County, Illinois

Cover title.Bibliography: p. 28

A guide to the geology of the Hillsdale area

Bibliography: p. 24

Measuring coal seam thicknesses with normal-lateral electric logs

Includes bibliographical references (p. 18-19)

A guide to the geology of the Carlinville area, Macoupin County, Illinois

Bibliography: p. [27