Hey, John D. <br/><br/>
Statistics in Economics 
/ by John D. Hey 
 - London:  Martin Robertson & Company Ltd.,  1974. 
 - x, 212p.; 
<br/><br/><label>ISBN: </label>085520561 
<br/><br/><label>Dewey Class. No.: </label>519.502  / HEY/S