1. Occurrence of pesticides in streams and ground water in the Puget Sound Basin, Washington, and British Columbia, 1996-98 Author/Creator: Bortleson, Gilbert Carl, 1940- author Publication/Creation: Tacoma, Washington : U.S. Department of the Interior, U.S. Geological Survey, 2000 Resource Type: Book Access & Availability: Loading
2. A review of possible causes of nutrient enrichment and decline of endangered sucker populations in Upper Klamath Lake, Oregon Author/Creator: Bortleson, Gilbert Carl, 1940- author Publication/Creation: Portland, Oregon : U.S. Geological Survey, 1993 Resource Type: Book Access & Availability: Loading
3. Occurrence of dissolved sodium in ground waters in basalts underlying the Columbia Plateau, Washington Author/Creator: Bortleson, Gilbert Carl, 1940- author Publication/Creation: Tacoma, Washington : U.S. Geological Survey, 1986 Resource Type: Book Access & Availability: Loading
4. Water-quality effects on Baker Lake of recent volcanic activity at Mount Baker, Washington Author/Creator: Bortleson, Gilbert Carl, 1940- author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1977 Resource Type: Book Access & Availability: Loading
5. A method for the relative classification of lakes in the state of Washington from reconnaissance data Author/Creator: Bortleson, Gilbert Carl, 1940- author Publication/Creation: Tacoma, Washington : U.S. Geological Survey, 1974 Resource Type: Book Access & Availability: Loading