Survey of multiple copping in less developed nations
DALRYMPLE, Dana G
Survey of multiple copping in less developed nations - Washington 1971 - 108p
CROPPING SYSTEMS -- ECONOMIC ASPECTS -- DEVELOPING COUNTRIES
CROPPING SYSTEMS -- ECONOMIC ASPECTS -- DEVE MULTIPLE CROPPING -- ECONOMIC ASPECTS -- DEV
338. 102 091 724 D12S
Survey of multiple copping in less developed nations - Washington 1971 - 108p
CROPPING SYSTEMS -- ECONOMIC ASPECTS -- DEVELOPING COUNTRIES
CROPPING SYSTEMS -- ECONOMIC ASPECTS -- DEVE MULTIPLE CROPPING -- ECONOMIC ASPECTS -- DEV
338. 102 091 724 D12S