00416nam a22001577a 4500 2418 2418 200228b ||||| |||| 00| 0 eng d 620.11 S9771 2013 Swift, H. Bewan Principles of magnetic crack detection 1st ed. London E & F. N. Spon 1944 vi,105 p. 9.00 Magnetic Testing BK 0 0 ddc 0 620_110000000000000_S9771 0 7034 CL CL 1954-03-10 A. H. Wheeler 620.11 S9771 01974 2020-02-28 BK