Bird Tracks & Sign: A Guide to North American Species
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NOBA award-winning author Mark Elbroch has contributed to numerous research projects in North America, from fishers to black bears. He currently directs the Puma (mountain lion) Program for Panthera (www.panthera.org)and lives in Washington State. He is a contributor to http://voices.nationalgeographic.com/author/melbroch/ and maintains the website http://markelbroch.com/.
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