{"id":"001011188","type":"book","title":"Das geologische Alter der bernsteinführenden Sedimente in Sambia (Bezirk Kaliningrad), bei Bitterfeld (Sachsen/Anhalt) und bei Helmstedt (SE-Niedersachsen)","publisher":"Muzeum Archeologiczne (Gdańsk)","publisher-place":"Gdańsk","pages":"33-40","container-title":"Investigations into amber. Badania bursztynu. Proceedings of the International Interdisciplinary Symposium: Baltic amber and other fossil resins. 997 Urbs Gyddanycz-1997 Gdańsk. Gdańsk, 2-6 september 1997","author":[{"family":"Ritzkowski","given":"Siegfried"}],"issued":{"raw":"1999"}}