{"id":"000444276","type":"article","title":"Prehistoric quartz quarrying in Norrland. A preliminary report of finds made at Gummark in Västerbotten and some observations concerning quartz technology","pages":"129-137","container-title":"Fornvännen. Tidskrift för svensk antikvarisk forskning, 68.1973","author":[{"family":"Broadbent","given":"N.D."}],"issued":{"raw":"1973"}}