Columbia subject headings:
Crime--Argentina--Buenos Aires--History.
Crime--Uruguay--History.
Police--Argentina--Buenos Aires--History.
Police--Uruguay--History.
Harvard subject headings:
Crime--Argentina--Buenos Aires--History.
Crime--Uruguay--History.
Police--Argentina--Buenos Aires--History.
Police--Uruguay--History.
Princeton subject headings:
Crime--Argentina--Buenos Aires--History.
Crime--Uruguay--History.
Police--Argentina--Buenos Aires--History.
Police--Uruguay--History.