Columbia subject headings:
Business presentations--United States--Handbooks, manuals, etc.
Government purchasing--United States--Handbooks, manuals, etc.
Letting of contracts--United States--Handbooks, manuals, etc.
Harvard subject headings:
Business presentations--United States--Handbooks, manuals, etc.
Government purchasing--United States--Handbooks, manuals, etc.
Letting of contracts--United States--Handbooks, manuals, etc.
Princeton subject headings: