Johnston, C. L. <br/><br/>
Essential Arithmetic:  The Community College of Allegheny County Section 080 

 - USA  Wadsworth Groups  2003 
 - xvii,A-92p.;  ill.; 
<br/><br/> include index 
<br/><br/><label>ISBN: </label>0534201075 
<br/><br/><label>LC Class. No.: </label>QA107  / .J65