00475nam a22001817a 4500 NUST - PNEC 20170116180851.0 150825b xxu||||| |||| 00| 0 eng d 002414360X LIBRARY 604.2 SPE 5679 Spencer, Henry Cecil Technical drawing problems, series 3 Henry Cecil Spencer Third Edition c.1980 5680 Mechanical drawing ME ddc BK 64600 64600 0 0 ddc 0 0 PNEC PNEC WING-A 0000-00-00 0 604.2 SPE PNECLIB-012306 2015-08-25 0000-00-00 BK