Natural gas information - International Energy Agency; Organisation for Economic Co-operation and Development (Paris : OECD, 1997)
PTSL : 1996, 2000(with 1999 data), 2001(with 2000 data), 2002(with 2001 data), 2003(with 2002 data), 2004(with 2003 data), 2005(with 2004 data), 2006 (with 2005 data), 2006(with 2005 data), 2007 (with 2006 data), 2008 (with 2007 data), 2009 (with 2008 data), 2010 (with 2009 data), 2011(with 2010 data)
Keywords: Natural gas -- Statistics