TY  - BOOK
AU  - Clarkson,E.N.K.
TI  - Invertebrate palaeontology and evolution
SN  - 0045600074 :
U1  - 562 23
PY  - 1979///, [reprinted 1982]
CY  - London, Boston
PB  - G. Allen & Unwin
KW  - Invertebrates, Fossil
N1  - Includes bibliographies and indexes
ER  -