@book{66432,
	author = {López Mateos, Manuel.},
	title = {Los conjuntos},
	publisher = {UNAM. Facultad de Ciencias,},
	year = {1978},
	series = {Comunicación interna - Divulgación},
	address = {México :},
	edition = {2 ed.},
	note = {28-42}
}