@book{7072,
	author = {Collier, Courtland A. and Ledbetter, William Burl.},
	title = {Engineering economic and cost analysis /},
	publisher = {Harper & Row,},
	year = {c1988.},
	address = {New York :},
	edition = {2nd ed.},
	note = {Second ed. of: Engineeering cost analysis. c1982.}
}