16 research outputs found
Chalkbrood: a serious disease in the alfalfa leafcutting bee and what we can do about it
No full text1 sheet: ill.; 28 cm
A study of the size and composition of the viewing audience of an educational television program in the Detroit metropolitan area
No full text
Differentiation and survival among North Carolina smallholders: An empirical perspective on the Lenin‐Chayanov debate
No full text
Increasing Response Rates and Representativeness of Online Panels Recruited by Mail: Evidence from Experiments in 12 Original Surveys
No full text
