Wallis W A <br/><br/>
Statistics   A New Approach    
Wallis W A; Roberts H V 
 - New York  Free Press          1956 
 - 646p  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>B28, J6;2,J6;3