title: Native plants as bioindicators of air pollutants. Proceedings of a symposium held in conjunction with the 34th Air Pollution Workshop.   University Park, Pennsylvania, USA. April 15, 2002.
mesh_terms: D000393:Air Pollutants / Q000633:toxicity*; D004784:Environmental Monitoring / Q000379:methods*; D010944:Plants / Q000187:drug effects*
chemical_list: D000393:Air Pollutants