Luthar, IS	 <br/><br/>
Sets, functions and numbers/ 
I S Luthar 
<br/><br/> CAS  General Education Curriculum (GEC) 
<br/><br/><label>ISBN: </label>1-84265-260-5 
<br/><br/><label>Dewey Class. No.: </label>511.32 L97 ©2005