TY  - MAP
T1  - Neogene time scale
DA  - 1990.
CY  - [Menlo Park, Calif.] :
AU  - Bartow, J. Alan.
VL  - 90-636A
CN  - I 19.76:
PB  - U.S. Geological Survey,
PP  - [Menlo Park, Calif.] :
PY  - 1990.
N1  - Black line print.
ID  - 241143
KW  - Geological time
TI  - Neogene time scale
ER  -