Clean air protection problems at national parks and wilderness areas : hearing before the Environment, Energy, and Natural Resources Subcommittee of the Committee on Government Operations, House of Representatives, One Hundred Third Congress, second session, April 29, 1994., by Energy United States. Congress. House. Committee on Government Operations. Environment

Title:	Clean air protection problems at national parks and wilderness areas : hearing before the Environment, Energy, and Natural Resources Subcommittee of the Committee on Government Operations, House of Representatives, One Hundred Third Congress, second session, April 29, 1994.
Author:	United States. Congress. House. Committee on Government Operations. Environment, Energy, and Natural Resources Subcommittee
Note:	U.S. G.P.O. :, 1995

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Subject:	Air quality management -- United States
Subject:	Air -- Pollution -- United States -- Physiological effect
Subject:	Air -- Pollution -- United States -- Prevention
Subject:	Environmental monitoring -- United States
Subject:	National parks and reserves -- United States
Subject:	Wilderness areas -- United States
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