TY - BOOK T1 - Lichen Flora of Great Britain and Ireland Y1 - 1992 A1 - Purvis, O.W. A1 - Coppins, B.J. A1 - Hawksworth, D.L. A1 - James, P. A1 - Moore, D.M. PB - The Natural History Museum CY - London ER - TY - Generic T1 - Lichen Recolonization in London under Conditions of Rapidly Falling Sulfur-Dioxide Levels, and the Concept of Zone Skipping. Y1 - 1989 A1 - Hawksworth, D.L. A1 - McManus, P.M. JF - Botanical Journal of the Linnean Society VL - 100 ER - TY - Generic T1 - Lichen recolonization in London’s cleaner air. Y1 - 1981 A1 - Rose, C.I. A1 - Hawksworth, D.L. JF - Nature VL - 289 ER - TY - RPRT T1 - Mapping studies Y1 - 1973 A1 - Hawksworth, D.L. ED - Ferry, B. W. ED - Baddeley, M.S. ED - Hawksworth, D. L. JF - Air Pollution and lichens PB - Athlone press CY - London ER - TY - RPRT T1 - Lichens as Pollution Monitors Y1 - 1970 A1 - Hawksworth, D.L. A1 - Rose, F. JF - Studies in Biology (66) PB - Edward Arnold CY - London ER - TY - Generic T1 - Qualitave scale for estimating sulphur dioxoide in air pollution in England and Wales using epiphytic lichens Y1 - 1970 A1 - Hawksworth, D.L. A1 - Rose, F. JF - Nature VL - 227 ER -