Biological data in water pollution assessment : quantitative and statistical analyses : a symposium / sponsored by ASTM Committee D-19 on Water, American Society for Testing and Materials, Minneapolis, Minn., 20-21 June 1977 ; K.L. Dickson and John Cairns, Jr., and R.J. Livingston, editors. (ASTM special technical publication ; 652)
Biological data in water pollution assessment : quantitative and statistical analyses : a symposium / sponsored by ASTM Committee D-19 on Water, American Society for Testing and Materials, Minneapolis, Minn., 20-21 June 1977 ; K.L. Dickson and John Cairns, Jr., and R.J. Livingston, editors.