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3. Klein, P.D., Simborg, D.W., and Kunze-Falkner, B.A., Proceedings of the Second International Symposium on Methods of Preparing and Storing Marked Molecules, Euratom, in press.
4. Klein, P.D., Separation Sci. 1: 511 (1966).
5. Cejka, V., Venneman, E.M., Belt-Van den Bosch, N., and Klein, P.D., J. Chromatog. 22: 308 (1966).