Applied Sciences and Development, Volumes 1-2Institute for Scientific Co-operation., 1973 - Agriculture |
Contents
The Fertility of Tropical Soils under the Influence of Agricultural | 7 |
Tropical Technology | 32 |
Man and the Biosphere | 60 |
Copyright | |
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addition Africa African Railways agricultural production air brakes Amazon Amazonia animal areas Asia average breeding calves cassava cattle centres chemical climate co-operative considerable costs crops developing countries diseases distribution East ecological economic effects epilimnion equipment example exist factors fallow farms fertility field forest gauge growth Gulf of Thailand harvest hectare humus important improved increase Indonesia industrial countries irrigation Java labour lakes land LELAND STANFORD LIBRARIES low-income countries machinery machines maize material means mechanization methods milk million nozzles nutrients nutrition oil palm operation ORGANIZED particularly plague plankton plant population possible problem processes programme protein regions result rice rolling stock season shifting cultivation South species spray square kilometre structure supply technical techniques temperature Thailand tion trawl fishery tropical soils tropical technology vacuum brake Várzea vegetation wheel-sets yield Zebu-Azaouak zone