tunnel portals / study site / power law relationship / /
Organization
United States Environmental Protection Agency / Congress / Permanent International Association of Road Congresses / Technology / Air & Waste Management Association / Department of Transportation / Hong Kong Environmental Protection Department for Regulatory Applications / U.S. Environmental Protection Agency / Environmental Protection Agency / /
Person
Richard A. Duffee / Chi Kok / Ned Ostojic / Brien Ostojic / /