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Title: Great for field and laboratory!
Review: I've been using the "Nat Geo" guide at my lab table since it first came out. Although I have yet to see the new edition, with Dunn's expertise this already useful guide can only get better.The comprehensive coverage of geographic/subspecific plumages has been of immense help to me while working feather cases. I recommend this book to every field officer and wildlife inspector responsible for making identifications of North American birds.
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