"Delaware's Aquifers and Ground Water" by William J. Wallace, Jr., 2004

"Delaware's Aquifers and Ground Water" by William J. Wallace, Jr., 2004, Box: 5, Folder: F49. William H. Williams papers, MSS 0570. University of Delaware Library Special Collections. https://findingaids.lib.udel.edu/repositories/2/archival_objects/50741 Accessed September 18, 2024.