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LII
Electronic Code of Federal Regulations (e-CFR)
Title 40—Protection of Environment
CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY
SUBCHAPTER C—AIR PROGRAMS
PART 81—DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSES
Subpart D—Identification of Mandatory Class I Federal Areas Where Visibility Is an Important Value
§ 81.424 Oklahoma.
40 CFR § 81.424 - Oklahoma.
CFR
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§ 81.424 Oklahoma.
Area name
Acreage
Public Law establishing
Federal land manager
Wichita Mountains Wild
8,900
91–504
USDI-FWS
