TY  - BOOK
AU  - Clarkson, E.N.K..
TI  - Invertebrate palaeontology and evolution / 
SN  - 0-04-560010-4
U1  - K1(H6)ObG:66 
PY  - 1986///
CY  - London : 
PB  - English Language Book Society/Allen & Unwin (Publishers) Limited , 
KW  - Palaeontology
ER  -