UN development aid: criteria and methods of evaluation,
Leonard, William R.(William Ramsdell),1904-
Jenny, Béat Alexander.joint author.
Nwali, Offia,joint author.
United Nations Institute for Training and Research.
New York, Arno Press,
1971.
At head of title: United Nations Institute for Training and Research.
"A UNITAR study."
Includes bibliographical references.
United Nations