55 Pa. Code § 4000.101
The provisions of this § 4000.101 adopted September 29, 1989, effective September 15, 1989, 19 Pa.B. 4221; reserved December 20, 1991, effective December 21, 1991, and apply retroactively to November 22, 1991, 21 Pa.B. 5849. Immediately preceding text appears at serial page (141289).