http://vocabularios.saij.gob.ar/vuce/http://vocabularios.saij.gob.ar/vuce/skos/39448- - Tochos http://vocabularios.saij.gob.ar/vuce/skos/39448 - Cobre refinado: BT http://vocabularios.saij.gob.ar/vuce/skos/39448 - - Tochos NT