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Investigations in the Gas and Oil Fields of Alberta, Saskatchewan, and Manitoba

Donaldson Bogart DowlingHenri GauthierMorley Evans WilsonStanley Eades SlipperFrank Harris McLearn

出版	J. De L. Taché, Printer, 1919
URL	http://books.google.com.hk/books?id=6ztSAQAAMAAJ&hl=&source=gbs_api