@book{61205,
	author = {Christenson, Charles J. and Vancil, Richard F.},
	title = {Managerial economics; text and cases /},
	publisher = {R. D. Irwin,},
	year = {1973.},
	address = {Homewood, Ill. :},
	edition = {Rev. ed.},
	note = {Revision of 1962 ed. by N. E. Harlan, C. J. Christenson, and R. F. Vancil.}
}