Wallen, Carl. <br/><br/>
Effective classroom management:  Abridged edition 

 - 309 p. 
<br/><br/> BIBLIOTECA: UACH-FFYL 
<br/><br/><label>ISBN: </label>0-205-05985-6 
<br/><br/><label>Dewey Class. No.: </label>428.007  / WAL 1978