TY  - BOOK
AU  - Shaner,W.M.
AU  - Philipp,P.F.
AU  - Schnehl,W.R.
TI  - Farming systems research and development:guidelines for developing countries
U1  - 631 
PY  - 1982///
CY  - Boulder
PB  - Westview Press
KW  - Agriculture
KW  - Crop Production
KW  - Farming Systems
ER  -