TY  - MAP
AU  - Nelson,Penelope C.
AU  - Derby,James R.
AU  - Hyne,Norman J.
TI  - Geological time: useful microfossil ranges 
PY  - 1985///
CY  - Tulsa, Okla.
PB  - PennWell Publishing
KW  - Geological time
KW  - Charts, diagrams, etc
KW  - Geology, Stratigraphic
KW  - Micropaleontology
N1  - Peta Geologi (PG)
ER  -