@book{64947,
	author = {Haveman, Robert H. and Krutilla, John V., and Resources for the Future.},
	title = {Unemployment, idle capacity, and the evaluation of public expenditures   :},
	publisher = {Published for Resources for the Future, by the Johns Hopkins Press,},
	year = {1968.},
	address = {Baltimore :},
	note = {Includes index.}
}