Acosta, M. and Palomino, B. 2004. EFFECT OF SANITARY LEAF PRUNING ON MARGINAL NECROSIS INCIDENCE AND CORMEL PRODUCTION OF COCOYAM (Xanthosoma spp. Schott). DARIEN, PANAMA. 1996-1997. Ciencia Agropecuaria. 16 (Jun. 2004), 81-96.