Earth resistivity equipment used in the Groundwater Section.
Published in Annual Report: Department of Registration and Education, July 1, 1958 - June 30, 1959;
1 photograph and negative;
December 8, 1954;
Manuscripts, maps, fieldnotes, and photographs may be viewed in-house only. Please contact the ISGS Special Collections Curator, Anne Huber, for an appointment at 217-300-0005 or email firstname.lastname@example.org Monday thru Friday, 8am-noon or 1pm-5pm.