@book{6723,
	author = {HERNANDEZ DE LEON, HECTOR RICARDO.},
	title = {MANUAL DE PRACTICAS : },
	publisher = {EL AUTOR},
	year = {1996},
	address = {TUXTLA GTZ., CHIS.: },
	note = {A LA CABEZA DE LA PORTADA: I.T.DE TUXTLA  GUTIERREZ.}
}