City air quality trends (GEM/Air data) vol. 2. 

 - Nairobi :  UNEP,  1993. 
 - 55 p. 
 - vol. 2. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Urban climatology--Charts, diagrams etc.<br/>Air quality--Charts, diagrams etc.
<br/><br/><label>LC Class. No.: </label>TD883.1  / .C58