Hover, David <br/><br/>
Think twice :   communication activities for beginner to intermediate students 
David Hover,  
 - 	Cambridge [Cambridgeshire] ; New York :   Cambridge University Press,   1986. 
 - 	96 pages : illustrations   ; 25 cm 
<br/><br/><label>ISBN: </label>0521273854 
<br/><br/><label>Dewey Class. No.: </label>428.34076