Browsing NSIS Volume 11 - Part 2 by Subject "dip needles"
Now showing items 1-2 of 2
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On a determination of the elements of terrestrial magnetism at Halifax, N.S., August, 1904
(McAlpine Publishing Co. Ltd., 1906) -
The structure and succession at North Sydney and Sydney Mines, C.B.
(McAlpine Publishing Co. Ltd., 1906)