Walker, Helen Mary,  1891- <br/><br/>
Elementary statistical methods 
[by] Helen M. Walker. 
 - New York,  H. Holt and company  [1943] 
 - xxv, 368 p.  diagrs.  24 cm. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>LCCN: </label>43008152  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Statistics.
<br/><br/><label>Dewey Class. No.: </label>310  / WAS 1958