TY  - BOOK
AU  - Cernea Michael M
AU  -  Tepping Benjamin J
TI  - System for monitoring and evaluating agricultural extension projects
T2  - "World bank staff working paper, 272."
U1  - "X9(J):77.1.N7, L7/UN" 
PY  - 1977///
CY  - Washington
PB  - DC World bank USA    
KW  - Agriculture Industries-prices
ER  -