00541nam a22001577a 4500 3957 3957 200708b ||||| |||| 00| 0 eng d 621.3133 D743 503 Dover, A.T. Theory and practice of alternating currents: General Principles, circuits, instruments, measurements transformers, machines symmetrical components 3rd ed. London Sir Isaac Pitman & Sons 1947 xvi,591p. 36.00 Alternating Electric Currents BK 0 0 ddc 0 621_313300000000000_D743 0 11436 CL CL 1962-03-15 Newman & Co 621.3133 D743 02705 2020-07-08 BK