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.

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Full view   University of Illinois at Urbana-Champaign
Full view   University of Illinois at Urbana-Champaign