Citation

80 FR 19206

Multiple canonical documents share this first-page citation.

Approval and Promulgation of Air Quality Implementation Plans; District of Columbia, Maryland, and Virginia; Attainment Demonstration for the 1997 8-Hour Ozone National Ambient Air Quality Standard for the Washington, DC-MD-VA Moderate Nonattainment Area Friday, April 10, 2015 80 FR 19206
Preregistration and Registration of Claims to Copyright Friday, April 10, 2015 80 FR 19206