TY  - BOOK
AU  - Whittington,H.B.
TI  - Silurian calymenid trilobites from the United States,Norway and Sweden
T2  - Palaeontology
PY  - 1971///
CY  - London - INGL
PB  - Palaeontological Association
KW  - Trilobites
KW  - Paleontologia
KW  - Paleozoologia
KW  - Fosiles
KW  - Silurico
KW  - Estados Unidos
KW  - Geologia
ER  -