Information sources on the cement and concrete industry. - New York, United Nations (UN) , 1972 - xx, 77p. 21 cm. - Guides to information sources, no. 2 [United Nations. Document] UNIDO/LIB/ser.D/2 . English, French, Russian, and Spanish. Bibliography: p. 75-77. Subjects--Topical Terms: Cement industries--Information servicesCement industries--BibliographyConcrete products industry--Information servicesConcrete products industry--Bibliography Gov. Doc. Class. No.: UN IDO GIS-2