Family clans in the Middle Ages : a study of political and social structures in urban areas 2026-02-15T17:49:53+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Heers, Jacques (Europe in the Middle Ages, 1977)