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Subjects
Geomagnetism, Secular variations, Geological surveys, Geomagnetic observatories, Boussoles, Compass, Déclinaison magnétique, Geophysical observatories, Magnetic declinationPlaces
CanadaID Numbers
- OLID: OL855361A
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August 23, 2008 | Edited by RenameBot | fix author name |
April 1, 2008 | Created by an anonymous user | initial import |