[Barrier role of water supply structures].
D002617:Chemical Industry; D002713:Chlorine; D004203:Disinfection / Q000379:methods; D005374:Filtration / Q000295:instrumentation; D005427:Flocculation; D007220:Industrial Waste / Q000517:prevention & control; D010573:Pesticide Residues / Q000302:isolation & purification; D010578:Petroleum; D012498:Sanitary Engineering / Q000295:instrumentation*; D014586:USSR; D014867:Water / Q000592:standards; D014874:Water Pollutants, Chemical / Q000302:isolation & purification; D014876:Water Pollution / Q000517:prevention & control; D014881:Water Supply
D007220:Industrial Waste; D010573:Pesticide Residues; D010578:Petroleum; D014874:Water Pollutants, Chemical; D014867:Water; D002713:Chlorine
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