Analytical References
- American Public Health Association . 1965 . Standard Methods for the Examination of Water and Wastewater, , 12th edition New York : APHA Inc. .
- Goltermann , H. L. 1969 . Methods for Chemical Analysis of Fresh Waters , International Biological Programme Handbook No. 8 Oxford : Blackwell Scientific Publications .
- Hellwig , D. H. R. 1967 . “ Preservation of Waste Water Samples ” . In Water Research Vol. 1 , 79 – 91 . Oxford : Pergamon Press .
- Herrmann , R. 1965 . Grundlagen und Anwendung der Atomabsorptionsspektroskopie in Flammen . Zeitschr. Klin. Chem. , 31 : 178
- Jacobs , H. and Gerstein , P. 1960 . Handbook of Microbiology Princeton : Van Nostrand .
- Kitto , W. H. 1938 . A contribution to Water Analysis: 1. Specific Conductivity as a Measure of Total Dissolved Solids . Analyst , 63 : 162
- Lenhard , G. 1965a . Dehydrogenase Activity as Criterion for the Determination of Toxic Effects on Biological Purification Systems . Hydrobiologia , 25 : 1 – 8 .
- Longwell , J. and Maniece , W. D. 1955 . Determination of Anionic Detergents in Sewage, Sewage Effluents and River Waters . Analyst , 80 : 167
- Slack , J. G. 1959 . The Determination of Anionic Detergents in River Water and Sewage Effluents . Analyst , 84 : 193
Literature Cited
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- King , L. C. 1948 . “ The Geology of Pietermaritzburg and the Surrounding Area ” . In Geol. Surv. Mem. 1948 Pretoria : Government Printer .
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- Lenhard , G. 1965c . A Note on the Calculation of Ultimate Oxygen Demand . Hydrobiologia , 26 ( 1-2 ) : 1
- 1969 . Water Quality and Abatement of Pollution in Natal Rivers . Natal Town and Regional Planning Report , 13 Natal Town and Regional Planning Commission, parts II-IV.
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- Vollenweider , R. A. 1969 . Primary Production in Aquatic Habitats. IBP Handbook No. 12 Oxford : Blackwell Scientific Publications .
- Yapp , W. B. , ed. 1959 . The Effects of Pollution on Living Material , Symposium of the Institute of Biology London : Institute of Biology .