00414nam a2200133 4500 1523 1523 200124b ||||| |||| 00| 0 eng d 671.522076 B766 1157 Bourbousson, P. H. M. Questions and answers on gas welding and cutting / London Butterworth 1973 120 p. Oxyacetylene Welding and Cutting ddc BK 0 0 ddc 0 671_522076000000000_B766 0 4292 CL CL 2020-01-24 671.522076 B766 04464 2020-01-24 BK