{"id":"001337190","type":"book","title":"Origen, evolución y decadencia del recinto amurallado de Leó","publisher":"Institución Fray Bernardino de Sahagùn de la Excma. Diputaciòn Provincial [C.S.I.C.]","publisher-place":"León","author":[{"family":"Mateo Marcos","given":"Juan"}],"issued":{"raw":"1981"}}