01639oam 2200421 a 450 991069507620332120160204145341.0(CKB)5470000002365956(OCoLC)66904808(EXLCZ)99547000000236595620060418d2006 ua 0engurmn| |||||txtrdacontentcrdamediacrrdacarrierNational Parks Air Tour Management Act[electronic resource] more flexibility and better enforcement needed : report to congressional requesters[Washington, D.C.] :U.S. Government Accountability Office,[2006]ii, 64 pages digital, PDF fileTitle from title screen (viewed on Mar. 30, 2006)."January 2006."Paper version available from: U.S. Government Accountability Office, 441 G St., NW, Rm. LM, Washington, D.C. 20548."GAO-06-263."Includes bibliographical references.National Parks Air Tour Management Act National parks and reservesUnited StatesManagementNoise controlGovernment policyUnited StatesSightseeing businessNoiseGovernment policyUnited StatesNational parks and reservesManagement.Noise controlGovernment policySightseeing businessNoiseGovernment policyGPOGPOGPOBOOK9910695076203321National Parks Air Tour Management Act3135882UNINA