TY - SER AU - Farias,M.S.de AU - Schlossser,J.F. AU - Bertollo,G.M. AU - Martini,A.T. AU - Oliveiras,L.F.V.de TI - Energy efficiency of an agricultural tractor according to different driving modes and working speeds KW - MÁQUINA AGRÍCOLA KW - TRATOR KW - COMBUSTÍVEL KW - CONSUMO UR - http://cientifica.org.br/index.php/cientifica/article/view/1096/639 ER -