Agronomy in a changing world and research needs for the seventies - Madison, WI (USA) : ASA, 1971 - v, 65 pages - Printed - ASA Special Publication ; No. 19 .


English


Agricultural policies
Economics
Fibres
Food supply
Labour
Land
Land resources
Mechanization
Water resources
baner

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Centro Internacional de Mejoramiento de Maíz y Trigo (CIMMYT) © Copyright 2015. Carretera México-Veracruz. Km. 45, El Batán, Texcoco, México, C.P. 56237.
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