BIBLIOGRAPHY-Continued 



Pennak, R. W., "Fresh-Water Invertebrates of the United States," 



The Ronald Press Company, New York, NY., page 769, 1953. 

 Phillips Petroleum Company, "Introduced Crasses and Legumes," 



Section 5, Pasture and Range Plants, Phillips Petroleum Company, 



Bartlesville, Okla., page 24, 1958. 

 Phillips Petroleum Company, "Introduced Grasses and Legumes," 



Section 6, Pasture and Range Plants, Phillips Petroleum Company, 



Bartlesville, Okla., page 14, 1960. 

 Prescott, G. W., "Algae of the Western Great Lakes Area," Bulletin 



No. 31, Cranbrook Institute of Science, Bloomfield Hills, Mich., 



page 946, 1951. 

 Prescott, G. W., "How to Know the Aquatic Plants," William C. 



Brown and Company, Dubuque, Iowa, pages 25, 76, 115, 117, 



1969. 

 Rotar, P. P., "Grasses of Hawaii," University of Hawaii Press, 



Honolulu, pages 119, 120, 216, 218, 219, 1968. 

 Sinclair, R. M., "Clam Pests in Tennessee Water Supplies," AWWA 



Journal, vol. 56, No. 5, American Water Works Association, New 



York, N.Y., pages 592-599, 1964. 

 Smith, G. M., "The Fresh-Water Algae of the United States," second 



edition, McGraw-Hill, New York, NY., page 719, 1950. 

 Tennessee Valley Authority, "Hydrilla-A Waterweed Menace," 



Division of Environmental Planning, Water Quality, and Ecology 



Branch, Tennessee Valley Authority, Knoxville (pamphlet), 1977. 

 United States Army Corps of Engineers, "Wetland Plants of the New 



Orleans District,", U.S. Army Corps of Engineers, New Orleans, 



Louisiana, pages 21, 22, 38, 1977. 

 University of Illinois, "Weeds of the North Central States," revised 



edition. North Central Regional Publication No. 36, Circular 718, 



Agricultural Experiment Station, University of Illinois, Urbana, 



page 30, 1960. 

 Whipple, G. C., "Microscopy of Drinking Water," revised by G. M. 



Fair and M. C. Whipple, fourth edition, John Wiley and Sons, 



New York, N.Y.; Chapman and Hall, Ltd., London, England, page 



585, 1954. 



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