Perhaps you should try some spelling variations:
siebenburgischen archiv » siebenburgischen archivs (Expand Search), siebenburgisches archiv (Expand Search), siebenburgischen vereins (Expand Search)
der siebenburgischen » des siebenburgischen (Expand Search), der siebenburgische (Expand Search), zur siebenburgischen (Expand Search)
erganzungsbande der » erganzungsbande des (Expand Search)
studie » studien (Expand Search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: studie transylvanica: erganzungsbande der siebenburgischen archiv, band 2~.