TY  - BOOK
AU  - Brown,D.H.
AU  - Hawksworth,D.L.
AU  - Bailey,R.H.
TI  - Lichenology : progress and problems : proceedings of an international symposium held at the University of Bristol
SN  - 0121367509
U1  - 589.1 BRO  
PY  - 1976///.
CY  - New York : 
PB  - Published for the Systematics Association and the British Lichen Society,  
KW  - Lichens
N1  - Sponsored jointly by the Systematics Association and the British Lichen Society; held in April 1974
ER  -