$CRK SEC Filings

Filing Filed On
PRIMARY DOCUMENT 13 Dec 2007
PRIMARY DOCUMENT 13 Dec 2007
PRIMARY DOCUMENT 07 Dec 2007
PRIMARY DOCUMENT 03 Dec 2007
PRIMARY DOCUMENT 03 Dec 2007
PRIMARY DOCUMENT 03 Jul 2007
PRIMARY DOCUMENT 03 Jul 2007
PRIMARY DOCUMENT 03 Jul 2007
PRIMARY DOCUMENT 03 Jul 2007
PRIMARY DOCUMENT 12 Jun 2007
PRIMARY DOCUMENT 29 May 2007
PRIMARY DOCUMENT 23 May 2007
PRIMARY DOCUMENT 29 Mar 2007
PRIMARY DOCUMENT 22 Mar 2007
PRIMARY DOCUMENT 03 Jan 2007
PRIMARY DOCUMENT 28 Dec 2006
PRIMARY DOCUMENT 27 Dec 2006
PRIMARY DOCUMENT 18 Dec 2006
PRIMARY DOCUMENT 18 Dec 2006
PRIMARY DOCUMENT 18 Dec 2006