Diary of a magnetic survey of a portion of the Dominion of Canada, chiefly in the North-Western Territories
Subtitle: executed in the years 1842-1844
By: by Sir J.H. Lefroy.
Series: CIHM/ICMH microfiche series -- no. 09023
Publisher: Longmans, Green
Published: 1980
Place of publication: London
Language: eng
Format: Microform
Number of pages: 142
Subjects: Geomagnetism -- Canada.; Geomagnetism -- Northwest Territories.; Geomagnetism -- United States.
Notes: Includes index.

Filmed from a copy of the original publication held by the Library of the Public Archives of Canada. Ottawa : Canadian Institute for Historical Microreproductions, 1980.