Ill winds : airborne pollution's toll on trees and crops

James J. MacKenzie, Mohamed T. El-Ashry
Bok · Engelsk · 1988

Utgitt	Washington, D.C. : World Resources Institute , 1988
Omfang	vi, 74 s. : fig.
Emner	Crop losses - United States Crops - Effect of air pollution on - United States Crops - Wounds and injuries - United States Forest declines - United States Vis mer... Trees - Effect of air pollution on - United States Trees - Losses - United States Trees - Wounds and injuries - United States
ISBN	0915825295