TY  - BOOK
AU  - Altman,Douglas G  .
TI  - Practical statistics for medical research / 
SN  - 0412386208
U1  - 610.72 
PY  - 1991///
CY  - New York : 
PB  - Chapman and Hall , 
KW  - MEDICINE STATISTICS
N1  - Includes index
ER  -