Air pollution and environmental impact of highways and their construction: introduction.
D000397:Air Pollution / Q000517:prevention & control*; D001108:Architecture; D001334:Automobile Driving; D004787:Environmental Pollution / Q000517:prevention & control; D005380:Financing, Government; D006077:Government Agencies; D009622:Noise / Q000517:prevention & control; D012926:Social Control, Formal; D014481:United States