Cox, Christopher J. <br/><br/>
Understanding mathematics 3 :  teachers΄resourse book / 
C. J. Cox, D. Bell. 
 - 2nd ed. 
 - London:   Murray,   1990.  
 - 281 p. :  ill. ;  30 cm. 
<br/><br/><label>ISBN: </label>0719547571 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>510