Diatoms in US waterways - L G Williams

http://www.aslo.org/lo/toc/vol_7/issue_3/0365.pdf

PRINCIPAL DIATOMS OF MAJOR WATERWAYS OF THE UNITED STATES

Louis G. Williams and Carol Scott

National Water Quality Network, U. S. Public Health Service, Cincinnati

1962

• Possible Relationships Between Plankton-Diatom Species Numbers and Water-Quality Estimates
• Louis G. Williams
• Ecology, Vol. 45, No. 4 (Oct., 1964), pp. 809-823
  (article consists of 15 pages)
• Published by: Ecological Society of America
• Stable URL: http://www.jstor.org/stable/1934927

• Plankton Diatom Species Biomasses and the Quality of American Rivers and the Great Lakes
• Louis G. Williams
• Ecology, Vol. 53, No. 6 (Nov., 1972), pp. 1038-1050
  (article consists of 13 pages)
• Published by: Ecological Society of America
• Stable URL: http://www.jstor.org/stable/1935416