Columbia subject headings:
Depository libraries--United States.
Freedom of information--United States.
Government information--United States.
Government publications--United States--Bibliography--Methodology.
Libraries--Special collections--Government publications.
Harvard subject headings:
Depository libraries--United States
Freedom of information--United States
Government information--United States
Government publications--United States--Bibliography--Bibliography--Methodology.
Government publications--United States--Bibliography--Methodology.
Libraries--Special collections--Government publications
Princeton subject headings:
Depository libraries--United States.
Freedom of information--United States.
Government information--United States.
Government publications--United States--Bibliography--Methodology.
Libraries--Special collections--Government publications.