- Attanasi, E. D.; Root, David H., 1993, Statistics of petroleum exploration in the Caribbean, Latin America, Western Europe, the Middle East, Africa, non-communist Asia, and the southwestern Pacific: U.S. G.P.O. ;
Free on application to U.S. Geological Survey, Map Distribution, Circular 1096, v, 129 p. :ill., maps ;28 cm.,
- Bernknopf, Richard L.; Brookshire, D. S.; Soller, D. R.; McKee, M. J.; Sutter, J. F.; Matti, J. C.; Campbell, R. H., 1993, Societal value of geologic maps: U.S. G.P.O. ;
USGS Map Distribution, Circular 1111, vi, 53 p. :ill., maps (some col.) ;28 cm.,
- Compiled by Gough, Larry P., 1993, Understanding our fragile environment; lessons from geochemical studies: U.S. G.P.O. ;
USGS Map Distribution, Circular 1105, v, 34 p. :ill. (some col.) ;28 cm.,
- Compiled by Switzer, J. C.; Porcella, R. L., 1993, Catalogue of U.S. Geological Survey strong-motion records, 1991: U.S. G.P.O. ;
USGS Map Distribution, Circular 1101, v, 12 p. ;28 cm.,
- Crockett, R. N.; Sutphin, D. M., 1993, International strategic minerals inventory summary report; niobium (columbium) and tantalum: U.S. Dept. of the Interior, Geological Survey, Circular 930-M, v. :ill. ;26 cm.; 36 p.,
- Edited by Kelmelis, John A.; Snow, K. Mitchell, 1993, Proceedings of the U.S. Geological Survey global change research forum, Herndon, Virginia, March 18-20, 1991: U.S. G.P.O. ;
U.S. Geological Survey, Map Distribution, Circular 1086, xii, 121 p. :ill., maps ;28 cm.,
- Edited by Schneider, Jill L., 1993, 1993 annual report on Alaska‘s mineral resources: U.S. Geological Survey, Circular 1102, x, 70 p. :ill., maps ;28 cm.28 cm.,
- Elliott, James E.; Trautwein, C. M.; Wallace, C. A.; Lee, G. K.; Rowan, L. C.; Hanna, W. F., 1993, The Conterminous United States Mineral Assessment Program; background information to accompany folio of geologic, geochemical, remote sensing, and mineral resources maps of the Butte 1 degree x 2 degrees Quadrangle, Montana: U.S. Govt. Print. Off. ;
U.S. Geological Survey, Map Distribution, Circular 1088, iii, 17 p. :ill., map ;28 cm.,
- Goolsby, Donald A.; Battaglin, William A.; Thurman, E. Michael, 1993, Occurrence and transport of agricultural chemicals in the Mississippi River basin, July through August 1993: U.S. Geological Survey, Circular 1120-C, v, 22 p. :ill., maps ;28 cm.28 cm.,
- Jackson, W. D.; Christiansen, Grey, 1993, International strategic minerals inventory summary report; rare-earth oxides: U.S. Dept. of the Interior, Geological Survey, Circular 930-N, v. :ill. ;26 cm.; 68 p.,
- Langer, William H.; Glanzman, V. M., 1993, Natural aggregate, building America‘s future: U.S. G.P.O., Circular 1110, 39 p. :ill. (some col.), col. map ;28 cm.,
- Madden-McGuire, D. J.; Winkler, Gary R., 1993, The Alaska Mineral Resource Assessment Program; background information to accompany mineral-resource and geologic maps of the Anchorage Quadrangle, south-central Alaska: U.S. G.P.O. ;
U.S. Geological Survey, USGS Map Distribution, Circular 1094, iii, 23 p. :maps ;28 cm.,
- McCabe, Peter J.; Gautier, Donald L.; Lewan, Michael D.; Turner, Christine, 1993, The future of energy gases: Dept. of the Interior, U.S. Geological Survey, USGS Map Distribution ;
U.S. G.P.O., Circular 1115, 58 p. :col. ill. ;28 cm.,
- Orris, G. J.; Page, N. J.; Staude, J. G.; Bolm, K. S.; Carbonaro, M. M.; Gray, Floyd; Long, K. R., 1993, Nonfuel mineral resources in the United States-Mexico border region; a progress report on information available from the Center for Inter-American Mineral Resource Investigations (CIMRI): U.S. G.P.O. ;
For sale by U.S. Geological Survey, Map Distribution, Circular 1098, iv, 19 p. :maps ;28 cm.,
- Parrett, Charles; Melcher, Nick B.; James, Robert W., Jr., 1993, Flood discharges in the upper Mississippi River basin, 1993: U.S. Geological Survey, Circular 1120-A, v, 14 p. :ill., maps ;28 cm.28 cm.,
- Rinella, Joseph F.; Hamilton, Pixie A.; McKenzie, Stuart W., 1993, Persistence of the DDT pesticide in the Yakima River basin, Washington: U.S. G.P.O. ;
U.S. Geological Survey, Books and Open-File Reports Section, [distributor], Circular 1090, 24 p. :ill., maps (some col.) ;28 cm.,
- Solley, Wayne B.; Pierce, Robert R.; Perlman, Howard A., 1993, Estimated use of water in the United States in 1990: U.S. G.P.O., Circular 1081, vii, 76 p. :ill., maps ;28 cm.,
- Spence, William J.; Herrmann, R. B.; Johnston, A. C.; Reagor, B. G., 1993, Responses to Iben Browning‘s prediction of a 1990 New Madrid, Missouri, earthquake: U.S. G.P.O. ;
Dept. of the Interior, U.S. Geological Survey, USGS Map Distribution, Circular 1083, v, 248 p. :ill. ;28 cm.,
- Wahl, Kenneth L.; Vining, Kevin C.; Wiche, Gregg J., 1993, Precipitation in the upper Mississippi River basin, January 1 through July 31, 1993: U.S. Geological Survey, Circular 1120-B, v, 13 p. :ill., maps ;28 cm.28 cm.,
