Columbia subject headings:
Handbooks and manuals.
Income tax--Law and legislation--United States.
Income tax--United States--Handbooks, manuals, etc.
Law for laypersons.
Tax returns--United States--Handbooks, manuals, etc.
Harvard subject headings:
Income tax--United States--Handbooks, manuals, etc.
Tax returns--United States--Handbooks, manuals, etc.
Princeton subject headings:
Income tax--United States--Handbooks, manuals, etc.
Tax returns--United States--Handbooks, manuals, etc.