TY  - GEN
AU  - George, Darren
AU  - Paul  Mallery
TI  - SPSS for windows step by step : : a simple guide and reference 17.0 update
SN  - 9788131762257
U1  - 005.55 
PY  - 2013///
CY  - New Delhi
PB  - Pearson
KW  - SPSS for windows
ER  -