Lichenology: progress and problems - Proceedings of an international symposium (held at the Univ. of Bristol, 8 Apr 1974) Lichenology: progress and problems - Proceedings of an international symposium (held at the Univ. of Bristol, 8 Apr 1974)

by Brown, D.H. (ed.), Systematics Association, London (United Kingdom) eng, Hawksworth, D.L. (ed.), Bailey, R.H. (ed.), British Lichen Society, London eng 22805
Published 1976