@book{97200,
	author = {Gulich, A. R. and Fitzgerarld, J. C.},
	title = {Manual de clasificación de volatería},
	publisher = {Centro Regional de Ayuda Técnica,},
	year = {1967},
	series = {E.U.A. Department of Agriculture. Agriculture handbook},
	address = {México, D.F. :}
}