Quantitative and qualitative characteristics of elephant grass (Pennisetum purpureum Schum) clones in the semi-arid lands of Pernambuco (Brazil)
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M. A. Lira | R. Oliveira | A. D. Palmieri | O. C. Almeida | Carlos R Ribeiro | G. Ferreira | Mércia Vf Santos | A. C. Melo