{"id":"000101322","type":"article","title":"Nuevas aves fósiles del yacimiento mesopleistocénico de Ambrona (Soria, España)","publisher":"CSIC","publisher-place":"Madrid","pages":"115-118","container-title":"Trabajos de Prehistoria (Madrid), 56, 1.1999","author":[{"family":"Sánchez Marco","given":"Antonio."}],"issued":{"raw":"1999"}}