@book{17151,
	author = {Hilbert, Jorge A. and Delafosse, Roberto M. and INTA. E.E.A.Castelar. },
	title = {El tractor agrícola.},
	publisher = {INTA. Instituto de Ingeniería Rural,},
	year = {1993.},
	series = {Ciencia pura - agropecuaria : cuaderno ;},
	address = {Castelar, Bs.As. :}
}