Author
Geological Survey (U.S.)
7
Alaska. Division of Geological and Geophysical Surveys
1
Arizona. Department of Water Resources
1
Arizona. State Land Department
1
Arkansas Geological Commission
1
Colorado. Division of Water Resources
1
Geological Survey (U.S.). Water Resources Division
1
Georgia Geologic Survey
1
Michigan. Department of Natural Resources
1
Michigan. Geological Survey Division
1