Columbia subject headings:
Government publications--Bibliography.
Learned institutions and societies--Bibliography--Union lists.
Libraries--Germany.
Periodicals--Bibliography--Union lists.
Harvard subject headings:
Government publications--Bibliography.
Learned institutions and societies--Bibliography--Union lists.
Libraries--Germany
Periodicals--Bibliography--Union lists
Princeton subject headings:
Government publications--Bibliography.
Learned institutions and societies--Bibliography--Union lists.
Libraries--Germany.
Periodicals--Bibliography--Union lists.
Union catalogs.