Basic statistical methods 
Downie, N.M. 
 - Fifth edition. 
 -  Harper & Row,publishers.  1983 
 - viii,371 Pages. 
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<br/><br/><label>ISBN: </label>9-71080503-7 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences -- Statistical methods.
<br/><br/><label>Dewey Class. No.: </label>GS 519.5 D75b 1983