TY  - BOOK
AU  - Simmonds,Norman W.
TI  - Farming systems research: a review 
SN  - 0821305662
PY  - 1985///
CY  - Washington, DC
PB  - World Bank
KW  - Agricultural systems
KW  - Research
KW  - Agriculture
KW  - On-farm
KW  - Tropics
N1  - Includes bib. references; Open
ER  -