Archaeological investigations in the proposed Midstate Irrigation Project, NebraskaJohn Ludwickson · First published 1978Open the Tome
Artifact descriptions, midstate surveyJohn Ludwickson, Dale R. Henning, United States. Heritage Conservation and Recreation Service · First published 1978Open the Tome
Archaeological investigations in the proposed midstate irrigation projectDale R. Henning, John Ludwickson, Peter Bleed, United States. National Park Service · First published 1977Open the Tome
