{"tema_id":"4383","string":"Yacimientos petrol\u00edferos","created":"2009-06-04 12:24:13","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\n622.276 "}]}