Multiple entries were found for '69 FR 23951'
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- Air Quality Designations and Classifications for the 8-Hour Ozone National Ambient Air Quality Standards; Early Action Compact Areas With Deferred Effective Dates
- Final Rule To Implement the 8-Hour Ozone National Ambient Air Quality Standard-Phase 1
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.