Norusis, M. J.  1948-. <br/><br/>
SPSS Advanced statistics 6.1 / 
by Marija J. Norusis and SPSS Inc. 
 - Chicago, Ill. :  SPSS Inc.,  1994. 
 - 606 p. :  ill. ;  23 cm. 
<br/><br/><label>ISBN: </label>0132000652 
<br/><br/><label>Subjects--Topical Terms: </label><br/>SPSS (Computer program).<br/>Social sciences--Statistical methods--Computer programs.