Donald C. Signor books & textbook
Geohydrology and Simulation of Steady-state Flow Conditions in Regional Aquifer Systems in Cretaceous and Older Rocks Underlying Kansas, Nebraska, and Parts of Arkansas, Colorado, Missouri, New Mexico
Donald C. Signor John O. Helgesen Donald G. Jorgensen
U.S. Geological Survey /1996-01-01 Paperback
isbn-10: 0607870338 / isbn-13: 9780607870336
