TY  - BOOK
AU  - George,Darren
TI  - SPSS for windows step by step: a simple guide and reference 
SN  - 0205331270
AV  - QA 76.76 .S67
PY  - 2001///
CY  - Boston
PB  - Allyn and Bacon
KW  - Research
KW  - Data processing
KW  - SPSS (Computer programs)
ER  -