TY  - BOOK
TI  - Lichenology: progress and problems 
SN  - 0121367509
U1  - 579.7 
PY  - 1976///
CY  - London
PB  - Published for the Systematics Association and the British Lichen Society by Academic Press
KW  - Lichens
N1  - Sponsored jointly by the Systematics Association and the British Lichen Society; held in April 1974
ER  -