Columbia subject headings:
Defense contracts--United States.
United States. Department of Defense--Accounting.
United States. Department of Defense--Appropriations and expenditures.
Harvard subject headings:
Defense contracts--United States.
United States. Department of Defense--Accounting.
United States. Department of Defense--Appropriations and expenditures.
Princeton subject headings:
Defense contracts--United States.
United States. Department of Defense--Accounting.
United States. Department of Defense--Appropriations and expenditures.