§ 52.1073 Approval status.  


Latest version.

[38 FR 33716, Dec. 6, 1973, as amended at 45 FR 53475, Aug. 12, 1980; 47 FR 20128, May 11, 1982; 56 FR 23808, May 24, 1991; 58 FR 50848, Sept. 29, 1993; 61 FR 16061, Apr. 11, 1996; 63 FR 47179, Sept. 4, 1998; 70 FR 25718, 25724, May 13, 2005; 70 FR 69443, Nov. 16, 2005; 74 FR 24705, May 26, 2009; 75 FR 82556, Dec. 30, 2010; 77 FR 52605, Aug. 30, 2012; 78 FR 33984, June 6, 2013