作者
Geological Survey (U.S.)
Mundorff, Maurice John, 1910-2002
2
North Carolina. Division of Mineral Resources
2
Bayley, William Shirley, 1861-1943
1
LeGrand, H. E. 1917-2013
1
North Carolina Geological and Economic Survey
1
North Carolina. Department of Conservation and Development
1
Olson, J. C. 1917-2013
1