TY  - BOOK
AU  - MacKenzie,James J.
AU  - El-Ashry,Mohamed T.
TI  - Air pollution's toll on forests and crops
SN  - 0300052324
PY  - 1989///
CY  - New Haven, Conn.
PB  - Yale University Press
KW  - Trees
KW  - United States
KW  - Effect of air pollution on
KW  - Europe
KW  - Crops
ER  -