Spagnolo, R.T. Volpato, C.E.S. Barbosa, J.A. Palma, M.A.Z. Barros, M.M. de Fuel consumption of a tractor in function of wear, of ballasting and tire inflation pressure Subjects--Topical Terms: TRATORCOMBUSTIVELMAQUINA AGRICOLATRACAO MOTORIZADARENDIMENTOCONSUMO