{"id":"000027391","type":"book","title":"Fractured chert specimens from the lower pleistocene Bethlehem Beds, Israel.- London","container-title":"Bulletin of the British Museum (Natural History): Geology; 5. 1961, no. 4. S. 73-87: zahlr. Ill","author":[{"family":"Clark","given":"J. Desmond 1916-2002."}],"issued":{"raw":"1961"}}