TY  - BOOK
AU  - Hildebrand ,Peter  E.
AU  - Poey, Federico
TI  - On-farm agronomic trials in farming systems research and extension  
SN  - 0931477107
PY  - 1985///
CY  - Boulder
PB  - Lynne Rienner Publication
KW  - AGROECOSYSTEMSFARMING SYSTEMSAGRICULTURAL STRUCTURE
ER  -