TY  - BOOK
AU  - George, Darren
TI  - IBM SPSS statistics 19 step by step : a simple guide and reference
SN  - 9780205255887
AV  - HA 32 .G458/ 
CY  - Boston
KW  - SPSS (Computer file) SPSS for Windows Social sciences--Statistical methods--Computer programs
ER  -