Context

Context of I. The influence of age and temperature on the potency of diphtheria antitoxin, by John F. Anderson. II. An organism (Pseudomonas protea) isolated from water, agglutinated by the serum of typhoid fever patients, by W.H. Frost. III. Some considerations on colorimetry... by Norman Roberts. IV. A gas generator, in four forms... by Norman Roberts. [U.S. Hygienic Laboratory Bulletin No. 66. June 1910.].
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