TY  - BOOK
AU  - DALRYMPLE, Dana G
TI  - Survey of multiple copping in less developed nations
U1  - 338. 102 091 724 D12S 
PY  - 1971///
PB  - Washington
KW  - CROPPING SYSTEMS -- ECONOMIC ASPECTS -- DEVELOPING COUNTRIES
KW  - CROPPING SYSTEMS -- ECONOMIC ASPECTS -- DEVE
KW  - MULTIPLE CROPPING -- ECONOMIC ASPECTS -- DEV
ER  -