TY  - BOOK
AU  - Hill, Austin Bradford
AU  - Health Statistics.
AU  - Hill, I.D.
TI  - Bradford hill's principles of medical stalistical
SN  - 8172250274
U1  - 610.212 
PY  - 1993///
CY  - New Delhi
PB  - B.J.Publication
KW  - Statistics
KW  - Medicial Statistics
ER  -