Hawksworth, D. L.
Lichens as pollution monitors / David L. Hawksworth, Francis Rose. - London : Edward Arnold, c1976. - 60 p. : ill., maps. - Institute of Biology's studies in biology ; no. 66 .
0713125551
Lichens--Effect of air pollution on.
Lichens--Effect of air pollution on.--Great Britain
Plant indicators.
Air--Pollution--Measurement.--Great Britain
Lichens as pollution monitors / David L. Hawksworth, Francis Rose. - London : Edward Arnold, c1976. - 60 p. : ill., maps. - Institute of Biology's studies in biology ; no. 66 .
0713125551
Lichens--Effect of air pollution on.
Lichens--Effect of air pollution on.--Great Britain
Plant indicators.
Air--Pollution--Measurement.--Great Britain