$ROK SEC Filings

Filing Filed On
SC 13G/A 13 Feb 2001
SC 13G/A 15 Feb 2000
SC 13G/A FILING FOR OPPENHEIMER CAPITAL 11 Feb 2000
SC 13G/A 23 Mar 1999
SCHEDULE 13G 17 Feb 1998
SC 13G/A 19 Feb 1997
SC 13G/A 19 Feb 1997