TY  - BOOK
AU  - Brown,D.H.
AU  - Hawksworth,D.L.
AU  - Bailey,R.H.
AU  - 
AU  - 
TI  - Lichenology: progress and problems ; proceedings of an international symposium held at the University of Bristol 
SN  - 0121367509
PY  - 1976///
CY  - London
PB  - Academic Press for the Systematics Association and the British Lichen Society
KW  - Lichens
KW  - Congresses
ER  -