Columbia subject headings:
Columbia University--History.
Columbia University--Student strike, 1968.
Columbia University--Students.
New York (N.Y.). Police Department.
Police--New York (State)--New York.
Student movements.
Student strikes--New York (State)--New York.
Harvard subject headings:
Princeton subject headings:
Columbia University--History.
Police--New York (State)--New York.
Student movements--New York (State)--New York.