TY  - BOOK
AU  - Zandstra, H. G.
AU  - Price, E. C.
TI  - Methodology for on-farm Cropping Systems Research
U1  - 631.072 
PY  - 1981///
CY  - Manila
PB  - The International Rice Research Institute
KW  - Agriculture and related technologies
KW  - Technology (Applied sciences)
KW  - Agronomy
KW  - Research methods
ER  -