The control of pollution.
D000397:Air Pollution / Q000517:prevention & control*; D004782:Environmental Health; D005161:Facility Regulation and Control; D008284:Maintenance and Engineering, Hospital / Q000331:legislation & jurisprudence; D008506:Medical Waste; D011640:Public Policy / Q000331:legislation & jurisprudence*; D012037:Refuse Disposal / Q000592:standards*; D006113:United Kingdom; D014866:Waste Products