Essentials for Algebra :  Concepts and Skills / 
R.E. Willcutt, P.R. Fraze, F.J. Gardella. 
 - Boston :  Houghton Mifflin,  1984. 
 - 515 p.  tabl., ill. 
<br/><br/><label>ISBN: </label>0395322235 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Algebra