{"id":"001215729","type":"book","title":"Problema sochranenija pamjatnikov naskal'nogo tvorčestva na Severe Evropejskoj Rossii. On the problem of preservation of the objects of rock arts in the north of European Russia","pages":"29-32","container-title":"Archeologičeskie Vesti, 7 (2000","author":[{"family":"Šumkin","given":"Vladimir Jakovlevič."}],"issued":{"raw":"2000"}}