Elementary algebra:  Part 1 
Denholm, A. Richard, Robert G. Underhill et al. 
 - USA,  Houghton mifflin  1977 
 - 461p. 
<br/><br/><label>ISBN: </label>0-395-24030-1 
<br/><br/><label>Subjects--Topical Terms: </label>--School of Pure and Applied Sciences
<br/><br/><label>LC Class. No.: </label>QA 152.2  / .D46 1977