Nancy F Castaldo
Nancy Castaldo is the author of several nonfiction books for children, including Sniffer Dogs: How Dogs (and Their Noses) Save the World. She lives in New York's Hudson Valley. nancycastaldo.com Morgan Heim is a senior fellow with the International League of Conservation Photographers and a former board member of the North American Nature Photography Association. morganheim.com
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The Wolves and Moose of Isle Royale: Restoring an Island Ecosystem (Scientists in the Field)