Perhaps you should try some spelling variations:
"bibliotheca historica rumanien 1925" » "bibliotheca historica romaniae 1925" (Expand Search), "bibliotheca historica rumanien 1935" (Expand Search), "bibliotheca historica rumanien 1938" (Expand Search), "bibliotheca historica rumanien 1941" (Expand Search), "bibliothek historica rumanien 1925" (Expand Search)
"bibliotheca historica rumanien 1918" » "bibliotheca historica romaniae 1918" (Expand Search), "bibliothek historica rumanien 1918" (Expand Search)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"bibliotheca historica rumanien 1925\") OR (\"bibliotheca historica rumanien 1918\"))~".
• Removing quotes may allow a broader search: (( bibliotheca historica rumanien 1925 ) OR ( bibliotheca historica rumanien 1918 ))~.
• Adding a wildcard symbol may retrieve word variants: (("bibliotheca historica rumanien 1925") OR ("bibliotheca historica rumanien 1918"))*.