00405nam a22001577a 4500 2040 2040 200211b ||||| |||| 00| 0 eng d 620.11 G339 1639 Gentry, George. Hardening and tempering engineers' tools 1st London Percival Marshall & Co. 1950 90p. 2.07 Tools BK 0 0 ddc 0 620_110000000000000_G339 0 5448 CL CL 1953-03-17 A. H. Wheeler 620.11 G339 01719 2020-02-11 BK 0 0 ddc 0 620_110000000000000_G339 0 5449 CL CL 1953-03-17 A. H. Wheeler 620.11 G339 01720 2020-02-11 BK