Stillman, E. G. (1941). The Preservation of Pneumococcus by Freezing and Drying.
Chicago-stil citatStillman, Ernest G. The Preservation of Pneumococcus By Freezing and Drying. 1941.
MLA-referensStillman, Ernest G. The Preservation of Pneumococcus By Freezing and Drying. 1941.
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