Trass, H 1988: Cryptoindication of the level of atmospheric air pollution and ecological monitoring. - Acta et Commentationes Universitatis Tartuensis812: 25-31. [RLL List # 135 / Rec.# 18941] Keywords: AIR POLLUTION/ USSR/ ESTONIA/ GENERAL
Abstract: 1 table. [Summary article on uses of lower plants for air pollution monitoring in the Soviet Union. Article includes a table with lichen air pollution indicator species for various regions and pollution levels. In English; Russian summary.]