Paul B. Marcum, Loy R. Phillippe, Daniel T. Busemeyer, William E. McClain, Mary Ann Feist, and John E. Ebinger
Vascular Flora of the Sand Ridge State Forest, Mason County, Illinois
Paul B. Marcum, Loy R. Phillippe, Daniel T. Busemeyer, William E. McClain, Mary Ann Feist, and John E. Ebinger
Vascular Flora of the Sand Ridge State Forest, Mason County, Illinois