$NAT SEC Filings

Filing Filed On
6-K 28 Jun 2013
CORRESP 28 Jun 2013
F-3/A 28 Jun 2013
6-K 16 May 2013
6-K 15 May 2013
UPLOAD 08 Apr 2013
UPLOAD 08 Apr 2013
6-K 05 Apr 2013
FINAL PROSPECTUS SUPPLEMENT 03 Apr 2013
6-K 02 Apr 2013
6-K 02 Apr 2013
424B2 01 Apr 2013
6-K 21 Mar 2013
FORM F-3 21 Mar 2013
FORM F-3 21 Mar 2013
POSASR 19 Mar 2013
20-F 19 Mar 2013
POSASR 19 Mar 2013
DISCLOSURE DOCUMENT 14 Feb 2013
FORM 6-K 4Q 2012 12 Feb 2013