Smoothey , Marion  <br/><br/>
let 's investigate ratio and proportion : 

 - Marshall :  London ;   1995. 
 - 64 p ; 24cm .  01 
 - 2024-08-29 
<br/><br/><label>ISBN: </label>185435776X 
<br/><br/><label>Nat. Bib. No.: </label>0010172 
<br/><br/><label>Nat. Bib. Agency Control No.: </label>SMO 
<br/><br/><label>Universal Decimal Class. No.: </label>510