Bakkes, J. A. <br/><br/>
An overview of environmental indicators: state of the art and perspectives 

 - Nairobi:  UNEP,  1994 
 - 72 p.  ilustraciones., cuadros.  
<br/><br/>04560 
<br/><br/>Introduction to environmental indicators. Selected environmental issues. Sets of indicators and environmental indices. The adequacy of current practices.  
<br/><br/><label>ISSN: </label>92-807-1427-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gestión Ambiental<br/>Cambio Climático<br/>Medio Ambiente
<br/><br/><label>Dewey Class. No.: </label>333.7  / B1689