Animal power in agricultural production systems (draught animals) with special reference to Tanzania
3 tables, drawings, photographs; 10 ref.
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Format: | Texto biblioteca |
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Subjects: | WORKING ANIMALS, ANIMAL POWER, FARMING SYSTEMS, ANIMAL DE TRAVAIL, ENERGIE ANIMALE, SYSTEME D'EXPLOITATION AGRICOLE, ANIMALES DE TRABAJO, ENERGIA ANIMAL, SISTEMAS DE EXPLOTACION, |
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