00561cam a22001931 4500 w 07000056 DLC 20260227112804.0 771122s1906 enk 001 0 eng w 07000056 (OCoLC)3439951 DLC GAT DLC TK1161 .S75 Still, Alfred, 1869- Polyphase currents; by Alfred Still, with numerous diagrams. London, New York, Whittaker, 1906. viii, 352 p. diagrs. 19 cm. Electric currents, Alternating. 91787 91787