Johnston, C.L. <br/><br/>
Essential arithmatic 
C.L. Johnston 
 - 4th 
 - California:  Wadsworth,  1984. 
 - x,534p 
<br/><br/> Includes index 
<br/><br/><br/>eng 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arithmetic
<br/><br/><label>Dewey Class. No.: </label>513.142  / JOE