Walker, Helen M. <br/><br/>
Elementary statistical methods 
Helen M. Walker and Joseph Lev 
 - rev. ed. 
 - New Delhi  Oxford &IBH  1965 
 - xvi,302p,; 24cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Statistics <br/>Statistical methods
<br/><br/><label>Dewey Class. No.: </label>519.5  / WAL