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Dec 31, 1966
Bulletin
… Blairmore Group of the Alberta Foothills is a thick wedge … are absent to the north in the central Foothills owing to … flora which in the north-central Foothills and in the upper …
Dec 31, 1959
Bulletin
… shale in the Smoky River area of Alberta, Western Canada. The … Colorado shale in other areas of Alberta and northern Montana. The … the Niobrara Formation of the Central Plains region of the United …