Columbia subject headings:
Catholic Church. Diocese of Linköping (Sweden)--History--Sources.
Formularies (Diplomatics)--Sweden--Linköping.
Latin letters--History and criticism.
Letter writing, Latin--Sweden--Linköping.
Linköping (Sweden)--Church history--Sources.
Manuscripts, Latin (Medieval and modern)--Sweden--Linköping.
Harvard subject headings:
Catholic Church. Diocese of Linköping (Sweden)--History--Sources.
Formularies (Diplomatics)--Sweden--Linköping.
Latin letters, Medieval and modern--Sweden--History and criticism.
Letter writing, Latin--Sweden--Linköping.
Letter writing--History--To 1500
Linköping (Sweden)--Church history--Sources.
Manuscripts, Latin (Medieval and modern)--Sweden--Linköping.
Princeton subject headings: