TY  - BOOK
AU  - Clarkson,E.N.K.
TI  - Invertebrate palaeontology and evolution
SN  - 0412479907
AV  - QE770 .C56 
U1  - 562 20
PY  - 1993///
CY  - London, New York
PB  - Chapman & Hall
KW  - Invertebrates, Fossil
N1  - Includes bibliographical references (p. 414-416) and indexes
ER  -