The river Avon water scheme.
Jamieson
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D049672:History, 19th Century; D049673:History, 20th Century; D009111:Local Government; D011057:Politics; D011634:Public Health / Q000191:economics / Q000193:education / Q000266:history / Q000331:legislation & jurisprudence; D011640:Public Policy; D045483:Rivers; D012606:Scotland / Q000208:ethnology; D012722:Sewage / Q000331:legislation & jurisprudence; D014867:Water / Q000502:physiology; D014873:Water Pollutants / Q000191:economics / Q000266:history; D014881:Water Supply / Q000191:economics / Q000266:history / Q000331:legislation & jurisprudence
D012722:Sewage; D014873:Water Pollutants; D014867:Water