View of Helmond’s of Bosau pons longissimus'. Archaeological underwater excavations of the bridge constructions of the Slavic and early German Olsborg stronghold on the Grosser Ploner Lake (north Germany) | Folia Praehistorica Posnaniensia

← Helmond’s of Bosau pons longissimus'. Archaeological underwater excavations of the bridge constructions of the Slavic and early German Olsborg stronghold on the Grosser Ploner Lake (north Germany)