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Start Over You searched for: Subjects Viruses ✖Remove constraint Subjects: Viruses Dates by Range 1900-1949 ✖Remove constraint Dates by Range: 1900-1949Refine by:
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- Letter from Alan Gregg to H. H. Dale1
- Letter from H. H. Dale to Alan Gregg1
- Regulations for the sale of viruses, serums, toxins, and analogous products in the District of Columbia and in interstate traffic1
- Regulations for the sale, barter, or exchange of any virus, therapeutic serum, toxin, antitoxin or analogous product or arsphenamine or its derivatives (or any other trivalent organic arsenic compound) in the District of Columbia or in interstate traffic or in export or import traffic1
- 1900-1949✖[remove]4
Current results range from 1931 to 1947