TY  - BOOK
AU  - Chaloner W G Ed.
AU  -  Lawson J D Ed.
TI  - Evolution and environment in the late silurian and early devonian
U1  - H523p1,N84, M5 
PY  - 1985///
CY  - London
PB  - Royal Society        
KW  -  Silurian
KW  - Geology
ER  -