TY  - BOOK
ED  - SPSS Inc.
TI  - SPSS Base 12.0 user's guide 
SN  - 9780131096769
AV  - HA32 .S54
PY  - 1998///
CY  - Chicago, Ill.
PB  - SPSS Inc.
KW  - SPSS for Windows
KW  - Social sciences
KW  - Statistical methods
KW  - Computer programs
N1  - Includes index
ER  -