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McGraw-HillBookCompaiiy ElectricalWorld The and Journal Engineering Mining Record NewsEngineering Engineering Gazette AmericanMachinistRailwayAge .AmericanSignal EngineerUnginoer Electric Journal CoalRailway Age andChemical PowerMetallurgical Engineering OVERHEAD ELECTRIC POWER TRANSMISSION PRINCIPLES AND CALCULATIONS BY ALFRED STILL ASSISTANT PROFESSOR OF ELECTRICAL PURDUEENGINEERING, UNIVERSITY; MEMBER OF THE INSTITUTION OF MEMBER OF THE AMERICANENGINEERS; INSTITUTE OF ASSOCIATE MEMBER OF THE INSTITUTION OF CIVIL ENGINEERS. AUTHOR OF "ALTER- NATING CURRENTS AND THE THEORY OF TRANSFORMERS" AND "POLY- ' ' PHASE CURRENTS, McGRAW-HILL BOOK INC.COMPANY, 239 WEST 39TH NEW YORKSTREET, 6 BOUVERIE E. C. LONDON, 1913 BY THE1913,COPYRIGHT, INC.BOOKMCGRAW-HILL COMPANY, *** 2 A;^v::. "**" Si.*; !. YORK PAMAPLE PRESS'THE.