000K  utf8
1500  ger
1500  lat
1500  pol
4000  Collection of documents from 1736-1743 related to the election of E[rnst Johann] Biron as Duke of Courland
4000  Сборник документов 1736-1743 гг., связанных с избранием Э. Бирона герцогом Курляндским
4060  265
4961  https://ditav.gbv.de/receive/lod_mods_00000524
5550  election of Ernst Johann Biron as Duke of Courland