Pocket activator /   
Longman. 
 - Essex :   Pearson,   2001. 
 - 632 p. 
<br/><br/><label>ISBN: </label>0582506468 
<br/><br/><label>Subjects--Topical Terms: </label><br/>DICCIONARIOS
<br/><br/><label>Universal Decimal Class. No.: </label>(038)=111