Author/Creator
- Moore, David W. (David Warren)2
- North Dakota Geological Survey1
- Oklahoma Geological Survey2
- Ontario Geological Survey3
- Pennsylvania. Bureau of Topographic and Geologic Survey1
- Richmond, Gerald Martin, 1914-11
- Riehle, J. R.1
- Sado, E. V.3
- South Dakota Geological Survey1
- Stine, Scott1
- Swinehart, James B.1
- University of California, Berkeley. Department of Geology and Geophysics1
- University of Massachusetts at Amherst. Department of Geology and Geography1
- University of Michigan. Department of Geological Sciences2
- University of Nebraska--Lincoln. Conservation and Survey Division1
- University of Texas at Austin. Bureau of Economic Geology2
- University of Texas. Bureau of Economic Geology2
- University of Virginia. Department of Environmental Sciences1
- Wahrhaftig, Clyde, 1919-19941
- Weide, David L.1