Chlorotic dwarf of eastern white pine caused by an ozone and sulphur dioxide interaction.
D000397:Air Pollution; D004357:Drug Synergism; D010126:Ozone / Q000494:pharmacology*; D010935:Plant Diseases; D013458:Sulfur Dioxide / Q000494:pharmacology*; D014197:Trees / Q000187:drug effects
D013458:Sulfur Dioxide; D010126:Ozone