00490nam a2200157 4500 1399 1399 200123b ||||| |||| 00| 0 eng d 693.71 C9589 1012 Constructional steel Research and Development organisation Steel Designeers' Manual 4th ed. London ELBS 1974 xii,1089 p. Building Iron and steel ddc BK 0 0 ddc 0 693_710000000000000_C9589 0 4052 CL CL 1976-02-13 693.71 C9589 04403 2020-01-23 BK