Barinaga, Marcia (1995) Origins of Lichen Fungi Explored,
Science, 268:1437. A popular account of the work of Andrea Gargas
et al. on tracing lichen evolution with the help of DNA Analysis,
reported in Science, 268: 1492-97.
Hale, Jr., M.E. (1976) How to Know the Lichens. Dubuque,
Iowa: William C. Brown and Co.
Hawksworth, D.L. (1990) The long-term effects of air pollutants
on Lichen communities in Europe and North America, in The
Earth in Transition. Woodwell, G., ed. Cambridge: Cambridge
University Press.
Toemmervik, H., Environmental
Surveillance from Satellites A report on the destruction
of the arctic ecosystem by pollution from Nickel processing on
the Kola peninsula of Russia. A popular report on the work of
Toemmervik, H., B. E. Johansen, J. P. Pedersen in the same area.
World Wide Web http://www.itek.norut.no/itek/sat/projects/sur_sat.fm.html
James, P. (1982) Lichens and Air Pollution. London:
British Museum; BP Educational Services.
Richardson, D.H.S. (1975) The Vanishing Lichens. Newton
Abbot,London and Vancouver: David and Charles
Richardson, D.H.S. (1987) Lichens as Pollution indicators
in Ireland. in Biological Indicators of Pollution. Dublin:
Royal Irish Academy.
Roth, C. (1984) The Plant Observer's Guidebook. Englewood
Cliffs: Prentice-Hall, Inc.
World Resources Institute (1987) A report by the International
Institute for Environment and Development and the World Resources
Institute. New York: Basic Books.
Gilbert, O.L. (1974) Air Pollution Survey by School Children.
Environmental Pollution 6: 175-180.
Leone, M. and B. Petriccione (1991) I Licheni Fanno Scuola.
La Nuova Ecologica. March, pp. 47-51.
Ni Lamnha, E., D.H.S. Richardson, P. Dowding, and J.M. Wells.
An air quality survey of Cork City and Great Island carried out
by school children. Dublin: An Foras Forbartha. (Studies also
done of Greater Dublin and Waterford/E. Cork)
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