Anti-pollution measures: the impossible dream. 1.
D000391:Air Microbiology; D000397:Air Pollution / Q000517:prevention & control*; D004463:Ecology; D004782:Environmental Health; D007220:Industrial Waste; D011158:Population Growth; D012498:Sanitary Engineering; D014481:United States; D001335:Vehicle Emissions; D014876:Water Pollution
D007220:Industrial Waste; D001335:Vehicle Emissions