Developments in telegraphy
Subtitle: way-wires multiplexed and interchangeable
By: by D.H. Keeley.
Contributors: Canadian Society of Civil Engineers.
Series: CIHM/ICMH Microfiche series = CIHM/ICMH collection de microfiches -- no. 90531
Publisher: s.n.
Published: 1991
Place of publication: [Montréal?
Language: eng
Format: Microform
Subjects: Telegraph.
Notes: Caption title.

"To be read on Thursday, 9th of October."

At head of title: (All rights reserved.) - (subject to revision) ... Canadian Society of Civil Engineers. Incorporated 1887 ...

Filmed from a copy of the original publication held by the National Archives of Canada. Ottawa : Canadian Institute for Historical Microreproductions, 1991.

10 p. ; 34 cm.