The environment encyclopedia and directory 1998 

 - 2nd. ed 
 - London   : Europa Publications   , 1998 
 - xvi, 560 p. :  
<br/><br/><label>ISBN: </label>185743028X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>SERVICIO DE INFORMACIONMEDIO AMBIENTE<br/>DIRECTORIO<br/>MATERIAL DE REFERENCIA
<br/><br/><label>Universal Decimal Class. No.: </label>(058.7)504 ENV