TY  - BOOK
ED  - United States.
TI  - Issues regarding the new NPS methodology used to evaluate the achievement of natural quiet restoration standards in Grand Canyon National Park: oversight hearing before the Subcommittee on National Parks and Public Lands of the Committee on Resources, House of Representatives, One Hundred Sixth Congress, first session, May 25, 1999, Washington, DC
PY  - 1999/// [i.e. 2000]
CY  - Washington
PB  - U.S. Government Printing Office
KW  - Airplanes
KW  - Noise
KW  - Government policy
KW  - Arizona
KW  - Grand Canyon National Park
KW  - Noise pollution
KW  - Grand Canyon National Park (Ariz.)
KW  - Legislative hearings
KW  - lcgft
N1  - "Serial no. 106-33."; CRDP Program record; Includes bibliographical references
UR  - https://purl.access.gpo.gov/GPO/LPS4284
ER  -