Algebra 1 :   an integrated approach / 
McDougal Littell 
 - New York :  McDougal Littell & Co.,  c1991. 
 - iv, 372 p. :  ill. ;  28 cm. 
<br/><br/><label>ISBN: </label>0812358651 
<br/><br/><label>Dewey Class. No.: </label>512  / ALG