Connecting and testing direct-current machines / by F.A. Annett and A.C. Roe. Annett, Fred Anzley. Roe, A. C. (Arthur Cecil), 1891- joint author. Electric machinery Direct current. TK2611 .A5 621.3 AHC Include index. New York, McGraw-Hill book company, inc., 1925. 1925. 1925 Text x, 237 p. : eng