{"tema_id":"4276","string":"Gas natural","created":"2009-06-03 12:47:35","code":null,"notes":[{"@type":"Nota hist\u00f3rica","@lang":null,"@value":"Se puede usar con un subencabezamiento geogr\u00e1fico. "},{"@type":"Nota bibliogr\u00e1fica","@lang":null,"@value":"553.98\n622.324.5 "}]}