TY - BOOK AU - Stubbings,G.W. TI - Alternating currents simplified: a non-mathematical text book on the rudiments of a.c. theory U1 - 537.6 23 PY - 1947/// CY - London PB - C. Lockwood KW - Electric currents, Alternating KW - Polyphase N1 - Includes index ER -