بحث متقدم
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.
قراءة الكتاب
  • تاريخ النشر: 1995.
  • الناشرون: U.S. G.P.O. :
  • المساهمون: Biodiversity Heritage Library
  • المجموعات: Biodiversity Heritage Library
  • التصنيف: Others
  • الموضوعات: National parks and reserves--United States. ,  Air--Pollution--Physiological effect--United States. ,  Air--Pollution--United States--Prevention. ,  Air quality management--United States. ,  Environmental monitoring--United States. ,  Wilderness areas--United States.
  • كلمات مفتاحية: Air Pollution Physiological effect United States. Air Pollution United States Prevention. Air quality management United States. Environmental monitoring United States. National parks and reserves United States. Wilderness areas United States.

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