Walker, Helen M.  <br/><br/>
Mathematics essential for elementary statistics :  a self teaching manual / 
Helen M. Walker. 
 - rev. ed. 
 - Bombay :  Oxford & IBH Pub.,  c 1951. 
 - xiii, 382 p. :  ill. ;  19 cm. 
<br/><br/> Includes index. 
<br/><br/>345  345 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics.
<br/><br/><label>Dewey Class. No.: </label>519.9 / W171m