Resolutions of the standing conference :  collected texts 1969-1979. 

 - Lisboa :  Council of Europe,  1981. 
 - 49 p. 
 - Working documents ;  MED-12-2 .
<br/><br/><label>No. de Clasificación Universal Decimal: </label>DO 37.014 (06) (4) =20 "1981" RES No.2.