Cooperation in the multi-ethnic classroom :  the impact of cooperative group work on social relationships in middle schools / 
Helen Cowie...[et al]. 
 - London :  David Fulton,  1994. 
 - 214p ;  25 cm. 
<br/><br/><label>ISBN: </label>1853462845 9781853462849 
<br/><br/><label>Nat. Bib. No.: </label>GB94X8724  bnb