$CRK SEC Filings

Filing Filed On
PRIMARY DOCUMENT 30 May 2013
PRIMARY DOCUMENT 14 May 2012
PRIMARY DOCUMENT 09 May 2012
PRIMARY DOCUMENT 09 May 2012
PRIMARY DOCUMENT 09 May 2012
PRIMARY DOCUMENT 16 Mar 2011
MAIN DOCUMENT DESCRIPTION 28 Aug 2008
MAIN DOCUMENT DESCRIPTION 05 Sep 2006
PRIMARY DOCUMENT 12 Dec 2005
PRIMARY DOCUMENT 12 May 2005
PRIMARY DOCUMENT 10 May 2004