1. Periphyton communities in streams of the Ozarks plateaus and their relations to selected environmental factors Author/Creator: Petersen, James C. 1952- (James Carroll) Publication/Creation: Little Rock, Ark. : U.S. Dept. of the Interior, U.S. Geological Survey, [2003] Resource Type: Book Access & Availability: Loading
2. Pesticides in surface water in the lower Illinois River Basin, 1996-98 Author/Creator: King, Robin B. Publication/Creation: Denver, CO : U.S. Geological Survey, Branch of Information Services [distributor]. Resource Type: Book Access & Availability: Loading
3. Pesticides in surface water of the Yakima River basin, Washington, 1999-2000 : their occurrence and an assessment of factors affecting concentrations and loads Author/Creator: Ebbert, J. C. Publication/Creation: Portland, Or. : U.S. Dept. of the Interior, U.S. Geological Survey, 2002 Resource Type: Book Access & Availability: Loading
4. Priority-pollutant trace elements in streambed sediments of the Cook Inlet basin, Alaska, 1998-2000 Author/Creator: Frenzel, S. A. Publication/Creation: Anchorage, Alaska : U.S. Dept. of the Interior, U.S. Geological Survey, 2002 Resource Type: Book Access & Availability: Loading