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2. Anderson, G. C. (1960). Recent Changes in the Trophic Nature of Lake Washington. In Algae Metropolitan Wastes, Trans. 1960 Semin., USPS Cincinnati, Ohio.
3. Brown and Caldwell, Inc. (1958). Metropolitan Seattle Sewerage and Drainage Survey. Rep. to the City of Seattle, King County and the State of Washington, Brown and Caldwell, Seattle, Washington.
4. Calculation of Unsteady-State Gas Flow through Porous Media;Bruce;Pet. Trans. AIME,1953
5. California Dep. of Fish and Game (1961–1967). Delta Fish and Wildlife Protection Study. Annu. Rep., Sacramento, California.