TY  - BOOK
AU  - Barker,D.J.P.(David James Purslove)
TI  - Practical epidemiology
SN  - 044301003X
PY  - 1973///
CY  - Edinburgh: 
PB  - Churchill Livingstone, 
KW  - Epidemiology
N1  - Bibliographies . pages 161. - Index
ER  -