Urban environmental indicators / 
Organisation for Economic Co-operation and Development. 
 - Paris :  Organisation for Economic Co-operation and Development,  1978. 
 - 274 p. :  ill ;  24 cm. 
<br/><br/><label>ISBN: </label>92-64-11754-7 
<br/><br/><label>Subjects--Topical Terms: </label><br/>General biology