Columbia subject headings:
Constitutional history--Baltic States.
Customary law--Baltic States.
Feudal law--Baltic States.
Law--Latvia--History.
Harvard subject headings:
Constitutional history--Baltic States.
Customary law--Baltic States.
Feudal law--Baltic States.
Law--Latvia--History.
Princeton subject headings:
Constitutional history--Baltic States.
Customary law--Baltic States.
Feudal law--Baltic States.
Law--Latvia--History.