TY  - BOOK
AU  - Barker, David James Purslove
AU  - Hall, A. J.
TI  - Practical epidemiology
SN  - 0443044244
PY  - 1991///
CY  - Edinburgh
PB  - English Language Book Society
KW  - Epidemiology
N1  - Acc. No. 11363
ER  -