00451nam a22001577a 4500 940 940 200101b ||||| |||| 00| 0 eng d 621.3 M745 508 Monk, S.Gordon. Classified examples in electrical engineering, Vol-1: Direct Current 7th London Sir Isaac Pitman & Sons 1948 x,113p. 4.04 Electrical Engineering BK 0 0 ddc 0 621_300000000000000_M745 0 3210 CL CL 1953-10-22 A. H. Wheeler 621.3 M745 00561 2020-01-01 BK