{"id":"000471271","type":"article","title":"How many kinds of age do historical scientists need, and what should they be called? -","pages":"183-194","container-title":"Pact. Revue du Groupe européen d'études pour les techniques physiques, chimiques et mathématiques appliquées à l'archéologie, 29.1990","author":[{"family":"Chippindale","given":"C."}],"issued":{"raw":"1990"}}