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4. “A Community Noise Survey of Medford, Massachusetts,” Transportation Systems Center, U.S. Dept. of Transportation Report No. DOT-TSG- OSR-72-1, October, 1972.
5. M. Simpson and D. Bishop, “Community Noise Measurements in Los Angeles, Boston and Detroit,” Bolt, Beranek and Newman, Inc., Report No. 2078, June, 1971.