Columbia subject headings:
International Law Association. Committee on the Uses of the Waters of International Rivers.
International Law Association. Confernce, (47th : Dubrovnik), 1956. Report.
International rivers.
Harvard subject headings:
International Law Association. Committee on the Uses of the Waters of International Rivers.
International Law Association. Conference 47th, Dubrovnik, 1956. Report.
International rivers.
Princeton subject headings: