Columbia subject headings:
Military weapons--Research--United States--Congresses.
Technological innovations--Economic aspects--United States--Congresses.
Harvard subject headings:
Defense industries--Research--United States--Congresses.
Military weapons--Research--United States--Congresses.
Technological innovations--Economic aspects--United States--Congresses
Princeton subject headings:
Defense industries--United States--Congresses.
Technological innovations--Economic aspects--United States--Congresses.