TY  - BOOK
AU  - Barker, D.J.P.
AU  - Hall, A.J.
TI  - Practical epidemiology
SN  - 0443044244
PY  - 1991///.(PGDME)
CY  - U.K
PB  - Longman group Ltd
KW  - Epidemiology
N1  - Includes index
ER  -