00703cam a22002531 4500 6535867 NUST - PNEC 20170116181119.0 771102m19579999xx 000 0 eng 57045965 (OCoLC)3389277 DLC LIBRARY DLC premarc TS250 .B55 671.823 BLA Blackburn, R. G. Sheet metal work: Calculation and science R. G. Blackburn London, E. Arnold c.1958 v. illus. 29 cm. Sheet-metal work. Cassidy, J., joint author. 7 cbc oclcrpl u ncip 19 y-gencatlg ddc BK 69496 69496 0 0 ddc 0 0 PNEC PNEC WING-B 0000-00-00 0 671.823 BLA PNECLIB-001266 2015-10-04 0000-00-00 BK