Columbia subject headings:
Herzog Ernst (Version A)--Concordances.
Herzog Ernst (Version B)--Concordances.
Herzog Ernst (Version K1)--Concordances.
Harvard subject headings:
Herzog Ernst (Version A)--Concordances.
Herzog Ernst (Version B)--Concordances.
Herzog Ernst (Version K1)--Concordances.
Princeton subject headings:
Herzog Ernst (Version A)--Concordances.
Herzog Ernst (Version B)--Concordances.
Herzog Ernst (Version K1)--Concordances.