@book{6027,
	author = {Tapia Ibargüengoitia, Mauricio.},
	title = {Telescopios y observatorios},
	publisher = {Secretaría de Educación Pública,},
	year = {1988},
	series = {Ciencia},
	address = {México, D.F. :},
	note = {60-169}
}