Guide to industrial directories. Guide des répertoires de matériel industriel. Guia de anuarios industriales. - New York : United Nations , 1970 - xvi, 137p. ; 28 cm. "United Nations publication sales no.: E.F.S. 71.11.B.5." Includes bibliographical references and index. Subjects--Topical Terms: Commerce--Directories--Bibliography Dewey Class. No.: UN 338 / UNIDO-5