TY  - BOOK
AU  - Cramer,F.H.
TI  - Microplankton from three Palaeozoic formations in the province of León (NW-Spain)
T2  - Memoir
PY  - 1964///
CY  - Leiden
PB  - Rijksuniversiteit Leiden
KW  - RMCA
KW  - GG Palaeontology
ER  -