TY  - BOOK
AU  - Fleiss, Joseph L  .
TI  - Design and analysis of clinical experiments / 
SN  - 0-471-82047-4
U1  - B3:38 
PY  - 1999///
CY  - New York : 
PB  - John Wiley & Sons, Inc. , 
KW  - Medicine, Clinical-Problems, exercises, etc
ER  -