@book{2568,
	author = {Hucknall, David J.},
	title = {Vacuum technology and applications /},
	publisher = {Butterworth-Heinemann,},
	year = {1991.},
	address = {[S.l.] :},
	url = {http://www.amazon.com/exec/obidos/ASIN/0750611456/chopaconline-20}
}