TY  - BOOK
AU  - Hughes C P Ed.
AU  -  Rickards R B Ed.
ED  - Inter. conf. of the greptolite working group of the international palaeontological associatin (2 : 1981 : Cambridge)
TI  - Proceeding on Palaeoecology and biostratigraphy of graptolites
T2  - Geological society special publication; 20
U1  - H6419, M6 
PY  - 1986///
CY  - Oxford
PB  - Blackwell Scientific Pub.       
KW  -  Palaeontology
KW  - Geology
ER  -