Role of human and draught animal power in crop production
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Main Authors: | , , , , |
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Format: | Texto biblioteca |
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Rome (Italy)
1993
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Subjects: | MANPOWER, ANIMAL POWER, PLANT PRODUCTION, ENERGY EXCHANGE, PRODUCTIVITY, EFFICIENCY, MAIN D'OEUVRE, ENERGIE ANIMALE, PRODUCTION VEGETALE, MANO DE OBRA, ENERGIA ANIMAL, PRODUCCION VEGETAL, ECHANGE D'ENERGIE, PRODUCTIVITE, EFFICACITE, INTERCAMBIO DE ENERGIA, PRODUCTIVIDAD, EFICACIA, |
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