TY  - BOOK
AU  - Norusis,M.J.
TI  - SPSS 6.1: guide to data analysis 
SN  - 0134370546
PY  - 1995///
CY  - Englewood Cliffs, N.J.
PB  - Prentice-Hall
KW  - SPSS (Computer file)
KW  - Social sciences
KW  - Statistical methods
KW  - Computer programs
ER  -