Columbia subject headings:
Codicology.
Manuscripts--Germany--Kempen (Viersen)
Propsteiarchiv Kempen.
Harvard subject headings:
Codicology.
Manuscripts--Germany--Kempen (Viersen)
Propsteiarchiv Kempen.
Princeton subject headings:
Codicology.
Manuscripts--Germany--Kempen (Viersen).
Propsteiarchiv Kempen.