TY  - GEN
AU  - Bailey, R.H.
AU  - Brown, D.H.
AU  - Hawksworth, D.L.
TI  - Lichenology : progress and problems ; proceedings of an international symposium held at the university of bristol
T2  - Systematics association
SN  - 0121367509
U1  - 589.1 BRO 
CY  - London, Academic press
KW  - Lichenology/ lichens
ER  -