1. Standard Methods for the Examination of Water and Wastewater;American Public Health Association,1971
2. Observations on fecal coliforms in several recent stream pollution studies;Ballentine,1968
3. Bacterial Indicators of Walter Pollution;Bonde,1962
4. Bacteriological methods for the estimation of water pollution;Bonde;Health Lab. Sci.,1966
5. Heterotrophic bacteria in a polluted marine environment;Bonde,1966