Columbia subject headings:
Poetry--Authorship--Handbooks, manuals, etc.
Publishers and publishing--Directories.
Harvard subject headings:
Poetry--Marketing--Directories.
Poetry--Publishing--Directories.
Princeton subject headings:
Directories.
Poetry--Authorship--Handbooks, manuals, etc.
Poetry--Marketing--Directories.
Poetry--Publishing--Directories.
Publishers and publishing--Directories.