Hill, Ward T.H. <br/><br/>
Elementary calculations:book one 

 - London:  George G. harrap & co.ltd,  1955. 
 - 112p.  20cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>510  / HIL