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Illustrations of Plant Microfossils from the Yazoo Clay (Jackson Group, Upper Eocene) Mississippi

其他書名	Y Robert H. Tschudy and Sharon D. Van Loenen
出版	U.S. Government Printing Office, 1970
URL	http://books.google.com.hk/books?id=GAvCzwEACAAJ&hl=&source=gbs_api