1. Occurrence and development of ground water in permafrost regions Author/Creator: Cederstrom, D. J. 1908-1997. (Dagfin John) Publication/Creation: Washington : U.S. Dept. of the Interior, Geological Survey, 1953 Resource Type: Book Access & Availability: Loading
2. Occurrence and distribution of dissolved trace elements in the surface waters of the Yakima River Basin, Washington Author/Creator: Hughes, Curt A. Publication/Creation: Denver, CO : U.S. Geological Survey, Branch of Information Services [distributor]. Resource Type: Book Access & Availability: Loading
3. Occurrence and distribution of microbiological contamination and enteric viruses in shallow ground water in Baltimore and Harford counties, Maryland Author/Creator: Banks, William S. L. Publication/Creation: Denver, CO : U.S. Geological Survey, Branch of Information Services [distributor] Resource Type: Book Access & Availability: Loading
4. Occurrence and distribution of nutrients, suspended sediment, and pesticides in the Mobile River basin, Alabama, Georgia, Mississippi, and Tennessee, 1999-2001 Author/Creator: McPherson, Ann K. Publication/Creation: Denver, CO : U.S. Geological Survey, Branch of Information Services [distributor]. Resource Type: Book Access & Availability: Loading
5. Occurrence and distribution of organochlorine pesticides, polychlorinated biphenyls, and trace elements in fish tissue in the lower Tennessee River Basin, 1980-98 Author/Creator: Knight, Rodney R. Publication/Creation: Denver, CO : U.S. Geological Survey, Branch of Information Services [distributor]. Resource Type: Book Access & Availability: Loading
6. Occurrence and implications of methyl tert-butyl ether and gasoline hydrocarbons in ground water and source water in the United States and in drinking water in 12 northeast and mid-atlantic states, 1993-2002 Author/Creator: Moran, Michael J. 1962- (Michael James) Publication/Creation: Rapid City, S.D. : U.S. Dept. of the Interior, U.S. Geological Survey, 2004 Resource Type: Book Access & Availability: Loading
7. Occurrence and status of volatile organic compounds in ground water from rural, untreated, self-supplied domestic wells in the United States, 1986-99 Publication/Creation: Rapid City, SD : U.S. Dept. of the Interior, U.S. Geological Survey, 2002 Resource Type: Book Access & Availability: Loading
8. Occurrence and temporal variability of methyl tert-butyl ether (MTBE) and other volatile organic compounds in select sources of drinking water : results of the focused survey Author/Creator: Delzer, Gregory C. Publication/Creation: Rapid City, S.D. : U.S. Dept. of the Interior, U.S. Geological Survey, 2003 Resource Type: Book Access & Availability: Loading
9. Occurrence and transport of agricultural chemicals in the Mississippi River basin, July through August 1993 Author/Creator: Goolsby, D. A. Publication/Creation: [Washington] : U.S. G.P.O. ; Denver, CO : Free on application to the U.S. Geological Survey, Map Distribution, 1993 Resource Type: Book Access & Availability: Loading
10. Occurrence and transport of diazinon in the Sacramento River, and selected tributaries, California, during two winter storms, January-February 2001 Publication/Creation: Sacramento, Calif. : U.S. Dept. of the Interior, U.S. Geological Survey, 2003 Resource Type: Book Access & Availability: Loading