Columbia subject headings:
Criminal investigation--Congresses.
Criminal procedure--Congresses.
Police power--Congresses.
Harvard subject headings:
Criminal investigation--Congresses.
Criminal investigation--United States--Congresses.
Criminal procedure--Congresses
Criminal procedure--United States--Congresses.
Police power--Congresses.
Police power--United States--Congresses.
Princeton subject headings:
Criminal investigation--Congresses.
Criminal procedure--Congresses.
Police power--Congresses.