Das Pflanzenreich. Regni vegetabilis conspectus. Im Auftrage der Königl. preuss. Akademie der Wissenschaften hrgs. von A. Engler Q Science
Groundwater resources in the Saline Valley Conservancy District, Saline and Gallatin Counties, Illinois Q Science
Structural geology and oil production of northern Gallatin County and southernmost White County, Illinois Q Science
