TY - SER AU - Zocoler,J.L. AU - Leite,M.A. AU - Saad,J.C.C. AU - Cruz,R.L. AU - Zocoler,J.G. TI - Investment recovery period in electric motor of higher efficiency in pumping for irrigation KW - ANALISE ECONOMICA KW - TARIFA KW - IRRIGACAO KW - RENDIMENTO KW - MODELO MATEMATICO KW - MOTOR ELETRICO KW - CUSTO UR - http://www.scielo.br/pdf/eagri/v33n2/01.pdf ER -