$CRK SEC Filings

Filing Filed On
PRIMARY DOCUMENT 14 Dec 2011
PRIMARY DOCUMENT 14 Dec 2011
PRIMARY DOCUMENT 14 Dec 2011
PRIMARY DOCUMENT 14 Dec 2011
PRIMARY DOCUMENT 27 Sep 2011
PRIMARY DOCUMENT 30 Aug 2011
PRIMARY DOCUMENT 18 May 2011
PRIMARY DOCUMENT 18 May 2011
PRIMARY DOCUMENT 18 May 2011
PRIMARY DOCUMENT 18 May 2011
PRIMARY DOCUMENT 13 May 2011
PRIMARY DOCUMENT 13 May 2011
PRIMARY DOCUMENT 13 May 2011
PRIMARY DOCUMENT 16 Mar 2011
PRIMARY DOCUMENT 21 Dec 2010
PRIMARY DOCUMENT 14 Dec 2010
PRIMARY DOCUMENT 14 Dec 2010
PRIMARY DOCUMENT 14 Dec 2010
PRIMARY DOCUMENT 14 Dec 2010
PRIMARY DOCUMENT 14 Dec 2010