I'm looking for the main library in this principality.
Principality of Andorra
Principality of Sealand was created in 1967.
Principality of Drutsk was created in 1101.
Principality of Salerno was created in 851.
Principality of Orange was created in 1163.
Principality of Orange ended in 1713.
Principality of Guria ended in 1829.
Principality of Göttingen was created in 1279.
Principality of Serbia was created in 1817.
Principality of Serbia ended in 1882.
Principality of Trubetsk ended in 1566.