Thomas, Hugh Kerr · New York : McGraw-Hill Book Co. · leaf 1
ClassBook. XJL •2>C70 ^ Copyright N^- CDIVRIGIfr DEPOSm WORM GEARING McGraw-Hill boohCompat^ Electrical World The Engineering and Mining JournalEn^eerin^ Record Engineering News Railw^ A^e Gazette American Machinist Signal EngirL(?€>r American Engineer Electric liailway Journal Coal Age…
Gearing, Worm
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
