{"tema_id":"4370","string":"Silicatos","created":"2009-06-04 12:12:32","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":"549.6\n553.446\n553.67 "}]}