@book{227069,
	author = {Parker, Sybil P. and e-libro, Corp.},
	title = {Enciclopedia McGraw-Hill de ciencia y tecnología},
	publisher = {McGraw-Hill},
	year = {1992.},
	address = {México},
	edition = {2a ed.},
	note = {Apéndices e índices en el v. 6.},
	url = {http://site.ebrary.com/lib/pucpr/Doc?id=10485806}
}