TY  - BOOK
AU  - Roger Kirkby
AU  -  Patricio Gallegos  Tully Cornick
TI  - On farm research methods : Comparative approch : experience of the quimiag penipe project ecuador
U1  - 338.10186 
PY  - 1981///
CY  - New York
PB  - Department of Plant Breeding & Biometrics Cornell University
ER  -