00559cam a2200181 4500 693.5 GRA 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 0 0 0 693_500000000000000_GRA Concrete construction. MCE 379 Reinforced concrete. 40928 ddc BK 548991 548991 0 0 ddc 0 0 MCE MCE 2014-09-12 0 693.5 GRA MCE-3123 2014-09-12 2014-09-12 BK