Gray, W. S. Concrete water towers, bunkers, silos, and other elevated structures. - 4th ed., rev. by G. P. Manning. - London, Concrete Publications [1964] - viii, 304 p. illus. 24 cm. - Concrete series . Subjects--Topical Terms: Concrete construction.MCEReinforced concrete. Dewey Class. No.: 693.5 / GRA