{"id":"001391254","type":"book","title":"Los sistemas defensivos califales de la Sierra de San Blas (Ágreda, Soria)","publisher":"Universidad","publisher-place":"Jaén","pages":"129-146","container-title":"Arqueología y Territorio Medieval, 20 (2013","author":[{"family":"Alonso Fernández","given":"Carmelo"}],"issued":{"raw":"2013"}}