The effect of changing magnetic declination on the compass (French) Geological Survey of Canada, Miscellaneous Report 52, 1991; 14 pages, https://doi.org/10.4095/132455 (L.R. Newitt). 2017-09-12 2017-09-12 Natural Resources Canada open-ouvert@tbs-sct.gc.ca Information and Communications OBD-GC0001-690287.pdfPDF https://open.canada.ca/ckan/dataset/9ea210b0-80bb-5a5f-a269-de8b33d354d4/resource/8f7a8544-8ddc-5c92-ad2e-dd2b9d7c5a9d/download/obd-gc0001-690287.pdf

The effect of changing magnetic declination on the compass (French)

Geological Survey of Canada, Miscellaneous Report 52, 1991; 14 pages, https://doi.org/10.4095/132455 (L.R. Newitt).

Resources

Resource Name Resource Type Format Language Links
OBD-GC0001-690287.pdf Guide PDF French Access