Lichenology : Progress and problems : Proceedings of an International Symposium held at the University of Bristol - Brown, D. H.; Hawksworth, D. L.; Bailey, R. H.; British Lichen Society (London ; New York : Published for the Systematics Association and the British Lichen Society by Academic Press, 1976)
Sponsored jointly by the Systematics Association and the British Lichen Society; held in April 1974.
Includes bibliogr. references and indexes
Keywords: Lichens -- Congresses