1. Ozone injury to Pinus strobus;Costonis;J. Air Poll. Control Assoc.,1969
2. Etiology of chlorotic dwarf of Eastern White Pine;Dochinger;Phytopathology,1965
3. The Impact of Ozone on Understorey Plants of the Aspen Zone;Harward,1971
4. Ozone;Hill,1970
5. Ozone injury to the foliage of Pinus ponderosa;Miller;Phytopathology,1963