... Switchboard instruments
Subtitle: a practical work for installation engineers, contractors, plant engineers and works electricians
By: by "Proton."  General editor: E. Molloy ... With 135 diagrams and photographs.
Contributors: Molloy, Edward, ed.
Series: Electrical engineer series-v. 9
Publisher: Chemical publishing co., inc.
Published: 1941
Place of publication: Brooklyn, N.Y
Language: eng
Number of pages: 183
Subjects: Recording electric meters.; Electric relays.