18 Va. Admin. Code § 100-20-60
Derived from VR505-01-1:1 § 1.6, eff. November 1, 1991; amended, Virginia Register Volume 15, Issue 26, eff. November 1, 1999; Volume 17, Issue 9, eff. March 1, 2001; renumbered, Virginia Register Volume 28, Issue 23, eff. August 15, 2012.