1992 Colombia
Authors: Rodriguez Fernández, C.A.
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1991 Colombia
Authors: Galeano, G.
1991 Indonesia
Authors: Kebler, P.J.A. and Sidiyasa, K.
1990 Colombia
Authors: Dominguez, C., Gomez, A. 1990
1990 Côte d'Ivoire
Authors: Rouw, A. de, Vellema, H.C. and Blokhuis, W.A.
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