Helgesen, John O. books & textbook
Appraisal of ground water for irrigation in the Little Falls area, Morrison County, Minnesota
United States Government Printing Office /1973T Paperback
Hydrogeology and ground-water-quality conditions at the Harvey County Landfill, south-central Kansas, 1990
University of Michigan Library /1993-01-01 Paperback / 60 Pages
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
Assessment of nonpoint-source contamination of the high plains aquifer in south-central Kansas, 1987 / by John O. Helgesen, Lloyd E. Stullken, and A.T. Rutledge. 1994 [Leather Bound]
Generic /2022-01-01 Leather Bound / 64 Pages
Description of data files compiled for the Central Midwest Regional Aquifer-System Analysis: USGS Open-File Report 89-42
Helgesen, John O. Hansen, Cristi V.
BiblioGov /2013-03-07 Paperback / 44 Pages
isbn-10: 1288877196 / isbn-13: 9781288877195