{"id":"001299431","type":"book","title":"Een jong-Paleolithische kernsteen uit de Schoone Grubbe (Ryckholt-Sint Geertruid)","pages":"17-18","container-title":"Archeologie in Limburg, 60 (1994","author":[{"family":"Roebroeks","given":"Wil."}],"issued":{"raw":"1994"}}