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International Conference on Titanium (1968 : London). Jaffee, R. I., ed. Promisel, N. E., ed.

International Conference on Geodynamics of the Western pacific. Indonesian Region Tokyo, 1978. Kobayashi, K., ed. by

Summerschool and Conference Functional Differential Equations and Approximation of Fixed points (1978 : Bonn) Peitgen, H. O., ed. by Walther, H. O., ed. by

International Conference on Fast Ion Transport in Solids, Electrodes and Electrolytes (1979: Vashishta, P., ed. Mundy, J. N., ed. Shenoy, G. K., ed.