TY  - JOUR
T1  - The Inter-Relationship of Variola and Vaccinia
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 71
SP  - 121
EP  - 133
PY  - 1902/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1902.0072
M3  - doi:10.1098/rspl.1902.0072
AU  - Copeman, S.
ER  -