Multiple entries were found for '66 FR 45600'
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- Revision of Class E Airspace, Fort Bridger, WY
- Revision of Class E Airspace, Vernal, UT
- Revision of Class E Airspace; Springhill, LA
Federal Register citations are by volume and page number. Volume maps directly to the year of publication, with 1994 being 59, and 2009 being 74.