Hoel , Paul G. <br/><br/>
Elementary Statistics  [[Book] /] 
Paul G . Hoel . 
 - 4 ed. 
 - new york :  john Wiley & sons inc,  1976. 
 - 361 p. 
<br/><br/><label>ISBN: </label>0471016942 
<br/><br/><label>Dewey Class. No.: </label>519.5