The distribution of middle woodland sites within the environment of the Lower Sangamon River, Illinois

von Roper, Donna C.
Reports of investigations (Illinois State Museum) no. 30.
Springfiled : Illinois State Museum, 1974.
Umfang/Format: vi, 22 pages : illustrations ; 27 cm.

Archaeological survey and settlement patterns models in central Illinois.

von Roper, Donna C.
Midcontinental Journal of Archaeology. Special Papers 2
Scientific Papers 16
Illinois : Kent State University Press, 1979.
Umfang/Format: 156 S. : Abb. ; 23 cm.