Harris, Joyce <br/><br/>
The school mathematics project  : book E. 

 - Cambridge :  Cambridge University Press,  1970. 
 - viii,168p.  : ill.  ; 24cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>LC Class. No.: </label>MATH QA39.H3