Sim, D. D.  <br/><br/>
Vocabulary development  
/ D. D. Sim, B. Laufer-Dvorkin 
. - Glasgow  : Collins ELT, 1984
. - 95 p.  ; 26 cm. 
 - Collins study skills in English .
<br/><br/><label>ISBN: </label>0003700119 
<br/><br/><label>Source: </label> Don britannique 
<br/><br/><label>Universal Decimal Class. No.: </label>802.0