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4Texto bibliotecaIICA
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5Texto bibliotecaIICA
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6Texto bibliotecaFAO IT
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7Texto bibliotecaFAO IT
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8by King, J.W. (ed.), Nebraska Univ., Lincoln (USA). Center for Sustainable Agricultural Systems eng, Francis, C.A. (ed.)
Published 1994Texto bibliotecaFAO IT -
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