||Statewide Survey of Air Pollution Damage to Vegetation, 1969.
||Pennsylvania State Univ., University Park. Center for Air Environment Studies.
Farm crops ;
Air pollution effects(Plants) ;
Air pollution economics
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
During the summer of 1969, a statewide survey of air pollution damage to vegetation was conducted to assess economic losses incurred on food and fiber crops in Pennsylvania. Ninety-two investigations were made in 28 counties. Most incidents occurred in areas of greatest agricultural activity.