@book{11795,
	author = {Mcgraw-Hill and McGraw-Hill.},
	title = {Mcgraw-hill encyclopedia of science and technology: 20 vol set},
	publisher = {McGraw-Hill Inc.,US,},
	year = {1989.},
	series = {Mcgraw-hill encyclopedia of science & technology (20v.)},
	address = {[S.l.] :},
	edition = {6th ed.},
	url = {http://www.amazon.com/exec/obidos/ASIN/0070792925/chopaconline-20}
}