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National Audubon Society Field Guide to North American Wildflowers
William A. Niering, Nancy C. Olmstead, Susan Rayfield, Carol Nehring
Vinyl Bound (Alfred A, )None
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National Audubon Society Field Guide to North American Wildflowers - Eastern Region
William A Niering and Nancy C. Olmstead
Hardcover (Knopf, March 15, 1995)Green vinyl binding. Loaded with color photos. 15th printing.