Indicators of Environmental Quality and Quality of Life. 

 - Paris :  UNESCO,  1978. 
 - 96 p. ;  fot. 
 - Reports and Papers in the Social Sciences; 38 .
<br/><br/><label>ISBN: </label>9231015397 
<br/><br/><label>No. de Clasificación Universal Decimal: </label>301.161: 911.3 =20 IND No.38.