TY  - BOOK
AU  - Evenson, Robert E.
AU  - Kislev, Yoav
TI  - Agricultural research and productivity
SN  - 0300018150
U1  - 338.10184 
PY  - 1975///
CY  - New Haven ; , London : 
PB  - Yale University Press
KW  - Agriculture
N1  - Includes bibliographical references and index
ER  -