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Published in 2014
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Published in 1998
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Published in 2004
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Guía técnica para el control químico de malezas en los principales cultivos de la Sierra ecuatoriana
Published in 1993
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by Valverde, Franklin; Torres, Cristhian; Rivadeneira Ruales, Jorge Esteban; Parra, Rafael; Cartagena Ayala, Yamil Everaldo; Alvarado Ochoa, Soraya Patricia
Published in 2010
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