@book{282,
	author = {Levine, Robert A.},
	title = {Evaluation research and practice :},
	publisher = {Sage Publications,},
	year = {c1981.},
	address = {Beverly Hills, Calif. :},
	note = {Papers drawn from the American-German Workshop on Evaluation Research held at the Free University of Berlin, June 1979.},
	url = {http://www.loc.gov/catdir/enhancements/fy0660/80026531-d.html}
}