00358nam a22001457a 4500 3929 3929 200708b ||||| |||| 00| 0 eng d 604.24 O651 3245 Ord, Harry. O.N.C. drawing examples London Cassell 1961 56p. 4.40 Mechanical Drawing BK 0 0 ddc 0 604_240000000000000_O651 0 11302 CL CL 1962-03-05 Allied publishers 604.24 O651 02684 2020-07-08 BK