{"tema_id":"2954","string":"Sat\u00e9lites artificiales en  navegaci\u00f3n","created":"2009-03-16 10:14:37","code":null,"notes":[{"@type":"Nota hist\u00f3rica","@lang":null,"@value":"Admitida diciembre 1999 "},{"@type":"Nota bibliogr\u00e1fica","@lang":null,"@value":"CDU 629.783 "},{"@type":"Nota bibliogr\u00e1fica","@lang":"es","@value":"Fte.: CSIC "}]}