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A Botanical Survey of U.S. Route 45 [FAP 332, Section 31-1, 42-1], from Harrisburg to Eldorado [from IL Route 13 to IL Route 142], Saline County, Illinois, with Emphasis on Threatened and Endangered Plant Species and Natural Areas

Steven R. Hill

出版	Illinois Natural History Survey, 1996
URL	http://books.google.com.hk/books?id=8oRRAQAAMAAJ&hl=&source=gbs_api