{"tema_id":"4630","string":"Minerales arcillosos","created":"2009-06-26 11:26:34","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 "}]}