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 National Audubon Society Field Guide to the Rocky Mountain States Peter Alden FIELD GUIDE • 1999 • PAPER • 447 PAGES
A compact field guide to 1,000 commonly encountered plants and animals of Colorado, Montana, Wyoming and Idaho. With 1,500 color photographs, 11 maps, and 16 night-sky charts. Alden also surveys the region's natural history, and tourist attractions.
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