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- The Concept of Res Communis in International Law. History of European Ideas. 12:459-477. 1990
- Geomorphology the research frontier and beyond : proceedings of the 24th Binghamton Symposium in Geomorphology, August 25, 1993 : held in conjunction with the third meeting of the International Association of Geomorphologists at McMaster University, Hamilton, Ontario, Canada, August 23-28, 1993 1993