TY  - BOOK
AU  - Evenson,Robert E.
AU  - Kislev,Yoav
TI  - Agricultural research and productivity
SN  - 0300018150 (pbk.) :
U1  - 338.10184 
PY  - 1975///
CY  - New Haven, Conn.
PB  - Yale University Press
KW  - Agriculture
KW  - Research
KW  - Economic aspects
KW  - Mathematical models
N1  - Includes bibliographical references and index
ER  -