Citation

80 FR 72939

Multiple canonical documents share this first-page citation.

Approval and Promulgation of Air Quality Implementation Plans; 2008 Ozone NAAQS Interstate Transport for Colorado, Montana, North Dakota and South Dakota Monday, November 23, 2015 80 FR 72937
Federal Register Vol. 80, No.225, November 23, 2015 Monday, November 23, 2015 80 FR 72939