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TY  - JOUR
T1  - Experiments on Variola and Vaccinia
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 54
SP  - 187
EP  - 189
PY  - 1893/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1893.0069
M3  - doi:10.1098/rspl.1893.0069
AU  - Copeman, S.
ER  -