TY  - BOOK
AU  - George, Darren
AU  - Mallery, Paul
TI  - SPSS for windows step by step: a simple guide and reference
SN  - 9788131724293
U1  - 519.50285  GEO-S 
PY  - 2006///
CY  - Delhi
PB  - Pearson education
KW  - SPSS
ER  -