[Warming of water in open swimming pools].
D004560:Electricity; D005860:Germany, West; D006361:Heating; D012621:Seasons; D013551:Swimming Pools; D013696:Temperature; D013816:Thermodynamics; D014867:Water; D014881:Water Supply
D014867:Water
Erwrmung des Badewassers in Freibädern.