Underwood, Mary <br/><br/>
Effective class management  : a pratical appoach 
/ Mary Underwood 
. - London  : Longman , 1987
. - 96p.  : Ill.  ; 21 cm. 
 - Longman keys to language teaching .
<br/><br/><label>ISBN: </label>0582746221 
<br/><br/><label>Source: </label> Don britannique 
<br/><br/><label>Universal Decimal Class. No.: </label>802.0