Problems of air pollution in the District of Columbia. Joint hearings before the Subcommittee on Business and Commerce and Subcommittee on Public Health, Education, Welfare, and Safety, Ninetieth Congress, first session [on S. 1941 ... ], by United States. Congress. Senate. Committee on the District of Columbia. Subcommittee on Business and Commerce et al.

Title:	Problems of air pollution in the District of Columbia. Joint hearings before the Subcommittee on Business and Commerce and Subcommittee on Public Health, Education, Welfare, and Safety, Ninetieth Congress, first session [on S. 1941 ... ]
Author:	United States. Congress. Senate. Committee on the District of Columbia. Subcommittee on Business and Commerce
Author:	United States. Congress. Senate. Committee on the District of Columbia. Subcommittee on Public Health, Education, Welfare, and Safety
Note:	U.S. Govt. Print. Off., 1967

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Subject:	Air -- Pollution
Subject:	Air -- Pollution -- Washington, D.C
Subject:	Washington (D.C.)
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