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Characteristics of sustainable polyculture production systems on terra firme. LIEBEREI, R. - GASPAROTTO, L. - PREISINGER, H. - SCHROTH - G.
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Identification of races os soybean rust and its problems. KATO, M. - YORINORI, J. T.
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Effects of a long-term recurrent selection program on the genetic structure of the BSSS maize population. GUIMARAES, P. E. de O.
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