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2. Saito, S., and T. Taniguchi, J. Colloid Interface Sci., In press.
3. Nadeau, H.G., and S. Siggia, in “Nonionic Surfactants,” Edited by M.J. Schick, Dekker, New York, 1967, p. 838.
4. Becher, P., Ibid.,“, p. 480.
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