Soenksen, P. J. (1996). Transport of agricultural chemicals in surface flow, tileflow, and streamflow of Walnut Creek watershed near Ames, Iowa, April 1991-September 1993. U.S. Geological Survey.
Chicago Style (17th ed.) CitationSoenksen, P. J. Transport of Agricultural Chemicals in Surface Flow, Tileflow, and Streamflow of Walnut Creek Watershed Near Ames, Iowa, April 1991-September 1993. Iowa City, Iowa: U.S. Geological Survey, 1996.
MLA (9th ed.) CitationSoenksen, P. J. Transport of Agricultural Chemicals in Surface Flow, Tileflow, and Streamflow of Walnut Creek Watershed Near Ames, Iowa, April 1991-September 1993. U.S. Geological Survey, 1996.
Warning: These citations may not always be 100% accurate.