The unit measure of time
Contributors: Royal Society of Canada
Publisher: publisher not identified
Published: 1890
Place of publication: Ottawa?]
Language: eng
Subjects: Time; Systems and standards; Time measurements; Temps; Mesure
Notes: Caption title.

At head of title: Royal Society of Canada. Address at the opening of Section III, by the president ...

Inserted: (1) The unit measure of time : memorandum [1 leaf] --(2) Circular dated June 6th 1890 [1 leaf].