Pennell, Francis Whittier. The Scrophulariaceae of Eastern Temperate North America. Philadelphia Academy of Natural Sciences, 1935.
Pennell, Francis Whittier. The Scrophulariaceae of Eastern Temperate North America. Philadelphia Academy of Natural Sciences, 1935.
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2000087699
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2014-12-04T14:51:26
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title
Pennell, Francis Whittier. The ...... emy of Natural Sciences, 1935.
shortTitle
Pennell, The Scrophulariaceae of Eastern Temperate North America (1935)