Columbia subject headings:
Authors and publishers--Germany--Directories.
Authorship--Handbooks, manuals, etc.
Publishers and publishing--Germany--Directories.
Harvard subject headings:
Authors and publishers--Germany--Directories.
Authorship--Handbooks, manuals, etc.
Publishers and publishing--Germany--Directories.
Princeton subject headings:
Authors and publishers--Austria.
Authors and publishers--Germany.
Authors and publishers--Switzerland.
Authorship--Handbooks, manuals, etc.