TY  - GEN
AU  - Campbell , M.J.
AU  - Swinscow , T.D.V
TI  - Statistics at square one 
SN  - 9781405191005
U1  - 610.2 
PY  - 2009///
CY  - New York
PB  - Wiley - Blackwell
KW  - MEDICAL STATISTICS
UR  - www.Wiley.com
ER  -