TY  - BOOK
AU  - Pingall,Prabhu L.
TI  - Milestones in impact assessment research in the CGIAR, 1970-1999
SN  - 970-648-076-5
U1  - F 631.47 P653m 
PY  - 1999///]
CY  - México
PB  - International Maize and Wheat Improvement Center : Consultative Group on International Agricultural Research
KW  - AGRICULTURA
KW  - INVESTIGACION
KW  - PRODUCCION
ER  -