Ballard, Philip Boswood <br/><br/>
Teaching the essentials of arithmetic / 
Philip Boswood Ballard 
 - 1st cheap ed. 
 - London :  Univ. of London Press,  1928 [Reprinted 1952]. 
 - xxiv, 260 p. :  ill. ;  18 cm. 
<br/><br/> Include Index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arithmetic
<br/><br/><label>Dewey Class. No.: </label>513  / BAT 1952