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National Geographic Field Guide to the Birds of North America
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Jon Lloyd Dunn, Jonathan K. Alderfer
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Birdwatch
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The Shell Birdwatching Guide to the United Arab Emirates
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Colin Richardson, Simon Aspinall
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National Geographic Field Guide to the Birds of North America
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Jon Lloyd Dunn, Jonathan K. Alderfer
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Birdwatch Magazine
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Field Guide to the Birds of North America
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National Geographic Society (U.S.)
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Why Watch Birds?
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Sue Taylor
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The Birdwatcher's Handbook
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Jonathan Elphick
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Idaho, Salmon District Bird Guide
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Birding Australia Site Guide
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Lloyd Nielsen
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