Yam, Peter <br/><br/>
Primary level vocabulary & usage 
Peter Yam 
 - Singapore :  Singapore Asia Publications,  c 2008. 
 - 152 p. : ill.   ; 23 cm. -- (book 6). 
<br/><br/>
<br/><br/><label>ISBN: </label>9789812550972 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Grammar.
<br/><br/><label>Dewey Class. No.: </label>425 Y19p 2008