Johnston, C. L.  1911- <br/><br/>
Essential algebra / 
C.L. Johnston, Alden T. Willis, Gale M. Hughes. 
 - 4th ed 
 - Belmont, CA :  Wadsworth Pub. Co.,  1985. 
 - 599 p. ;  28 cm. 
<br/><br/><label>ISBN: </label>0-534-05022-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Algebra