AUTHORITY: section 104.500, RSMo Supp. 1988. Emergency rule filed Dec. 9, 1983, effective Jan. 1, 1984, expired April 17, 1984. Original rule filed Dec. 9, 1983, effective April 11, 1984. Emergency amendment filed Jan. 13, 1984, effective Jan. 23, 1984, expired May 22, 1984. Emergency amendment filed March 27, 1987, effective April 4, 1987, expired Aug. 2, 1987. Amended: Filed March 25, 1987, effective July 13, 1987. Emergency rescission and rule filed Dec. 16, 1988, effective Dec. 26, 1988, expired April 26, 1989. Rescinded and readopted: Filed Feb. 28, 1989, effective May 11, 1989. Emergency amendment filed Dec. 13, 1989, effective Dec. 23, 1989, expired April 21, 1990. Amended: Filed Dec. 13, 1989, effective March 26, 1990. Emergency amendment filed March 15, 1990, effective March 25, 1990, expired May 11, 1990. Amended: Filed March 13, 1990, effective June 28, 1990. Emergency rescission and rule filed Nov. 27, 1991, effective Jan. 1, 1992, expired April 29, 1992. Rescinded and readopted: Filed Nov. 27, 1991, effective May 14, 1992. Amended: Filed Nov. 23, 1992, effective June 7, 1993. Emergency rescission filed Dec. 20, 1993, effective Jan. 1, 1994, expired April 30, 1994. Rescinded: Filed Dec. 20, 1993, effective July 10, 1994.