@book{1644,
	author = {Harker, J H. and Backhurst, J R.},
	title = {Chemical engineering.},
	publisher = {Butterworth-Heinemann,},
	year = {1990.},
	series = {Coulson & richardson's classic series.},
	address = {[S.l.] :},
	edition = {4th ed.},
	url = {http://www.amazon.com/exec/obidos/ASIN/0750629428/chopaconline-20}
}