Geology and coal deposits, Jarvis Croek coal field, Alaska : a stratigraphic division of the coal field and an estimato of coal reverses - Wahrhaftig, Clyde, 1919-1994; Hickcox, C. A. (Washington : United States Government Printing Office, 1955)
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Keywords: ložiska uhlí; coal deposits; Aljaška; Alaska; bulletiny; information bulletins