English: Brandenburg an der Havel ( Germany ) . Archaeological Museum of the state of Brandenburg - Stone Age Gallery:Neolithic boat axe of the Single Grave culture ( 2.800-2.200 BC ), from Boberow.
Deutsch: Brandenburg an der Havel ( Deutschland ). Archäologisches Landesmuseum Brandenburg - Abteilung Steinzeit: Neolithische Bootsaxt der Einzelgrab-Kultur, aus Boberow, Lkr. Prignitz
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