58 Pa. Code § 137.27
The provisions of this § 137.27 adopted November 15, 1974, effective November 16, 1974, 4 Pa.B. 2379; amended November 14, 1975, effective November 15, 1975, 5 Pa.B. 2981; amended May 2, 1980, effective May 3, 1980, 10 Pa.B. 1777; amended January 23, 1981, effective January 10, 1981, 11 Pa.B. 419; reserved June 19, 1987, effective July 1, 1987, 17 Pa.B. 2464. Immediately preceding text appears at serial pages (110909) to (110910).