Man-made environmental hazards. I. How man shapes his environment.
D000397:Air Pollution; D002248:Carbon Monoxide; D004391:Dust; D004781:Environmental Exposure; D004782:Environmental Health; D006838:Hydrocarbons; D009585:Nitrogen Dioxide; D011834:Radiation Monitoring; D011851:Radioactivity; D012037:Refuse Disposal; D012722:Sewage; D012907:Smoking; D013458:Sulfur Dioxide; D014481:United States; D001335:Vehicle Emissions; D014876:Water Pollution
D004391:Dust; D006838:Hydrocarbons; D012722:Sewage; D001335:Vehicle Emissions; D013458:Sulfur Dioxide; D002248:Carbon Monoxide; D009585:Nitrogen Dioxide