. A biological investigation of the Athabaska-Mackenzie region. Zoology. North American Fauna No. 27, U S. Dept. Agr. Biological Survey. Plate Fig. 1.—Tangled Mass of Uprooted Trees, Result of Landslip, Athabaska Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Preble, Edward Alexander, 1871-1957. Washington, Govt. print. off.

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Keywords: ., bookcentury1900, bookdecade1900, bookpublishe, booksubjectzoology