California Air Resources Board. (1992). Notice of public meeting to consider a plan to control emissions from off-highway vehicle engines. Sacramento, California Air Resources Board.
National Research Council (U.S.) (1986). Transportation Research Board., & National Research Council (U.S.). Transportation Research Board. Group 1--Transportation Systems Planning and Administration. Air-quality and noise issues in environmental planning. Washington, D.C., Transportation Research Board National Research Council.
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