VanStone 1974, Athapascan Adaptations, PDF?

[D Roy Mitchel IV]

Greetings,
Since James VanStone's classic is long out of print, I'm wondering if anyone knows of a PDF of the book that I can assign to my fall students in our course, "Athabaskan Adaptations," as a bit of background (to go with the five other books that they're buying). Thanks.
Roy Mitchell
Term Asst. Prof. Anthropology
University of Alaska Anchorage
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