Information sources on the machine tool industry. - New York : United Nations (UN) , 1976 - xii, 71p. ; 21 cm. - UNIDO guides to information sources ; no. 22 [Document] - United Nations ; ID/168(UNIDO/LIB/SER.D/22) . Includes bibliographical references and index. Subjects--Topical Terms: Machine-tool industry--DirectoriesMachine-tool industry--Information services Gov. Doc. Class. No.: UN IDO GIS-22