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A Guide and Key to the Aquatic Plants of the Southeastern United States, by Don E. Eyles ... and J. Lynne Robertson, Jr ... Original Drawings by Garnet W. Jex ...
出版U.S. Government Printing Office, 1944
URLhttp://books.google.com.hk/books?id=SfJ8QwAACAAJ&hl=&source=gbs_api