Books by J. C. Gwillim:
Books in the extended shelves:
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Gwillim, J. C. (John Cole), -1920: A partial bibliography of publications refering [sic] to the geology and mineral industry of Alberta, British Columbia and the Yukon (s.n., 1908) (page images at HathiTrust)- Gwillim, J. C. (John Cole), -1920: Report on the Atlin mining district, British Columbia (S.E. Dawson, 1901) (page images at HathiTrust)
Find more by J. C. Gwillim at your library, or elsewhere.