The world book of math power /  Every day math 
World Book Encylopedia 
 - Chicago :  World book encyclopedia,  c1983. 
 - 490-800 p. :  ill., figs., tabs. ;  23 cm. 
<br/><br/><label>ISBN: </label>0716631601 
<br/><br/><label>LCCN: </label>
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>LC Class. No.: </label>W927  / . 1983