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2. “Bergey’s Manual of Determinative Bacteriology,” 8th Ed., ed. by R. E. Buchanan and N. E. Gibbons, The Williams & Wilkins Co., Baltimore, 1974.
3. Y. Takasaki and T. Yamanobe, “Enzyme and Food Processing,” ed. by G. G. Birch, N. Blakebrough and K. J. Parker, Applied Science Publishers Ltd., London, 1981, pp. 73 ~ 88.