van Dobben, HF 1996: Decline and recovery of epiphytic lichens in an agricultural area in The Netherlands (1900-1988). - Nova Hedwigia62(3-4): 477-485. [RLL List # 165 / Rec.# 19307] Keywords: AGRICULTURE/ AIR POLLUTION/ AMMONIA/ NO2/ SO2
Abstract: 1 fig. 2 tab. [Comparisons of historic collections with inventories made in 1973 and 1988.]