Lawrey, JD 1993: Lichens as monitors of pollutant elements at permanent sites in Maryland and Virginia. - The Bryologist96(3): 339-341. [RLL List # 153 / Rec.# 11210] Keywords: AIR POLLUTION/ METALS/ NITROGEN/ SULFUR
Abstract: 4 tab. [Reports results of long-term air pollution studies using Flavoparmelia baltimorensis at three sites of increasing distance from urban Washington, D.C.]