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1Digital revistaSCIELO
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2Digital revistaSCIELO
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3Digital revistaSCIELO
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4by Ayarza, Miguel Angel, Pizarro, Esteban A., Rocha, Carlos Magno Campos da, Vilela, Lourival, Claessen, Jeanne C., Pereira, Roberto José, Sharma, Ravi Datt, Charchar, Maria José
Published 1994Book Chapter bibliotecaCGIAR