Author/Creator
- Corporación Venezolana de Guayana. Técnica Minera9
- Du Bray, E. A.9
- Head, James W.9
- Maldonado, Florian9
- Orndorff, Randall C.9
- Ryan, Darlene A.9
- Thompson, Ren A.9
- Williams, Van S.9
- Hudson, Mark R.8
- TTK Healthcare Limited. Publications Division8
- Chapman, Mary G.7
- Graymer, R. W. (Russell Walter)7
- Hearn, Paul P.7
- Johnson, William D., Jr.7
- Kansas Geological Survey7
- Lindsay, Charles R.7
- Lucchitta, Ivo7
- Ruleman, C. A. (Chester Allan)7
- Sherrod, David R.7
- Shroba, R. R.7