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PART 13 - LABELING PROCEEDINGS Authority:27 U.S.C. 205(e), 26 U.S.C. 5301 and 7805. Source:T.D. ATF-406, 64 FR 2129, Jan. 13, 1999, unless otherwise noted. Editorial Note:Nomenclature changes to part 13 appear by T.D. ATF-449, 66 FR 19085, Apr. 13, 2001.