@book{42761,
	author = {McConnell, Campbell R. and McConnell, Campbell R.},
	title = {Instructor's manual of Elementary Economics :},
	publisher = {McGraw-Hill,},
	year = {1960.},
	address = {New York :},
	note = {First ed. published in 1960 under title: Elementary economics: principles, problems, and policies.}
}