Johnston, C. L.  1911- Willis, Alden T. Lazaris, Jeanne,  1932- <br/><br/>
Essential arithmetic / 
C.L. Johnston, Alden T. Willis, Jeanne Lazaris. 
 - 6th ed. 
 - Belmont, Calif. :  Wadsworth Pub. Co.,  c1991. 
 - xvi, 694 p. :  ill. ;  28 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0534138489 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arithmetic.