TY  - BOOK
AU  - Shimer,Hervey Woodburn
TI  - An introduction to the study of fossils: plants and animals
PY  - 1948///
CY  - New York
PB  - The MacMillan Company
KW  - PaleontologÃ­a
KW  - FÃ³sil
KW  - Libro
ER  -