TY  - BOOK
AU  - Colebrook,Dora Challis
TI  - The source of infection in puerperal fever due to haemolytic streptococci,
AV  - RG811 .C7
PY  - 1935///
CY  - London
PB  - H. M. Stationery office
N1  - At head of title: ...  Privy council.  Medical research council; "References": p. 70
ER  -