Richard Olson, K. <br/><br/>
Effects of air pollution on western forests 
/ by Richard K.Olson and Allen S. Lefohn  
 - Pittsburgh :  Air and Waste Management Association,  1989. 
 - ix, 577 p. ;  24 cm. 
<br/><br/><label>ISBN: </label>0-923204-03-2 
<br/><br/><label>Subjects--Index Terms: </label>Trees - Effect of air pollution on - West (U.S.) - Congresses; Plants - Effect of air pollution on - West (U.S.) - Congresses; Forest ecology - West (U.S.) - Congresses; Trees - Wounds and injuries - West (U.S.) - Congresses; Air - Pollution - West (U.S.) - Congresses; 
<br/><br/><label>Dewey Class. No.: </label>581.5264 RIC  / 516