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Estudio General de Suelos de los Municipios de San Martin, Granada y Castilla la Nueva. (Departamento del Meta). Vol. XI, no. 6. (+ 4 maps) [Monograph]
Rocha, O. \ López, A. \ (et al.) \ 1975
computer techniques - erosion - soil conservation - Colombia
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CEPEC: Informe Técnico 1968 e 1969 [Monograph]
Moreno, J.O.A. \ Vello, F. \ Rocha, H.M. \ Miranda, E.R. de \ Cruz, L.C. \ 1970
crops - biology - soil fertility - soil science - soil physics - geology - Brazil
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Variaçoes Climáticas e Flutuaçoes da Oferta Agrícola no Centro-Sul do Brasil. Vol. 1: Relatório da Pesquisa. Série Estudos para o Planejamento, no. 1. [Monograph]
Rocha, J. \ 1972
agriculture - soil - climatology - ecology - Brazil
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Cultura do Feijoeiro Fatores que Afetam a Produtividade. [Monograph]
Zimmermann, M.J. de \ Rocha, M. \ Yamada, T. \ 1988
Brazil
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