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Reproduced from the Journal of General Physiology, 1941, 24, 377-397, by copyright permission of the Rockefeller University Press. and http://jgp.rupress.org/
Periodical. Knopfmacher, H. P., and A. J. Salle. "Studies on the Lactase of Escherichia Coli." Journal of General Physiology 24, 3 (20 January 1941): 377-397. Article. 21 Images.. Journal of General Physiology