@book{12097,
	author = {ZAID, GABRIEL, 1934-     . and EL COLEGIO NACIONAL, ED.},
	title = {EL PROGRESO IMPRODUCTIVO/ },
	publisher = {EL COLEGIO NACIONAL},
	year = {2004},
	series = {COLECCION OBRAS DE GABRIEL ZAID},
	address = {MEXICO: }
}