TY - ECHAP AU - Hawksworth D. BT - Monitoring with Lichens – Monitoring Lichens CY - Dordrecht, The Netherlands DO - 10.1007/978-94-010-0423-7_3 LA - eng PB - Kluwer Academic Publishers PP - Dordrecht, The Netherlands PY - 2002 T2 - Monitoring with Lichens – Monitoring Lichens TI - Bioindication: Calibrated scales and their utility SN - 978-1-4020-0430-8 ER -