Law of the sea at the crossroads : the continuing search for a universally accepted régime : proceedings of an interdisciplinary symposium of the Kiel Institute of International Law, July 10 to 14, 1990 / edited by Rüdiger Wolfrum ; assistant editors, Ursula E. Heinz, Denise A. Bizzarro / WolfrumRüdiger, UrsulaE. Heinz, DeniseA Bizzarro, ほか