{"id":"000071891","type":"article","title":"Actividad de urgencia en Riotinto (Huelva)","publisher":"Sociedad","publisher-place":"Sevilla","pages":"149-153","container-title":"XXXV aniversario de la Sociedad Espeleológica Geos","author":[{"family":"Pérez Macías","given":"Juan Aurelio"}],"issued":{"raw":"2000"}}