Cite
HARVARD Citation
Pollock, T. (1957). The Optimum Age for Mass B.C.G. Vaccination in England and Wales. BMJ. 2 (5035), pp. 20-23. [Online].
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Pollock, T. (1957). The Optimum Age for Mass B.C.G. Vaccination in England and Wales. BMJ. 2 (5035), pp. 20-23. [Online].