Columbia subject headings:
Bibliographical literature--Germany--Bibliography.
Bibliography--Germany.
Reference books, German--Bibliography.
Reference books--Germany--Bibliography.
Harvard subject headings:
Bibliographical literature--Germany--Bibliography.
Bibliography of bibliographies.
Bibliography--Germany.
Bibliography.
Reference books, German--Bibliography.
Reference books--Bibliography
Reference books--Germany--Bibliography
Princeton subject headings:
Bibliographical literature--Bibliography.
Bibliography of bibliographies.
Bibliography.
Reference books--Bibliography.