22 Pa. Code § 121.63
The provisions of this § 121.63 adopted February 27, 1969; amended September 4, 1981, effective September 5, 1981, 11 Pa.B. 3045; amended March 26, 1982, effective March 27, 1982, 12 Pa.B. 1043; amended October 16, 1987, effective October 17, 1987, 17 Pa.B. 4120; reserved October 4, 1991, effective October 5, 1991, 21 Pa.B. 4633. Immediately preceding text appears at serial page (128121).