Kolby, Jeff. <br/><br/>
GRE Math Prep Course 
Jeff, Kolby, Derrick, Vaughn & Kunda Vamsidhar. 
 -  Nova Press,  c2012. 
 - 524 p.:  ill. 
<br/><br/><label>ISBN: </label>9788172343811 
<br/><br/><label>Dewey Class. No.: </label>510.76  / KOL/GER