@book{12849,
	author = {Deem, William. and etc.},
	title = {Digital computers circuits and concepts /},
	publisher = {Reston Publishing,},
	year = {1975.},
	address = {[S.l.] :},
	edition = {First Edition.},
	url = {http://www.amazon.com/exec/obidos/ASIN/0879091932/chopaconline-20}
}