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Aquatic Vascular Plants of New England: Cabombaceae, Nymphaeaceae, Nelumbonaceae, and Ceratophyllaceae

C. B. HellquistGarrett E. Crow

出版	New Hampshire Agricultural Experiment Station, University of New Hampshire, 1984
URL	http://books.google.com.hk/books?id=WYopAQAAMAAJ&hl=&source=gbs_api