TY  - BOOK
AU  - Purcell, Kevin P.
CN  - I 19.76:
CY  - [Menlo Park, CA] :
DA  - 1995.
ID  - 220074
KW  - Geological time
N1  - Also available as floppy disk designed for Macintosh computers.
PB  - U.S. Dept. of the Interior, U.S. Geological Survey,
PP  - [Menlo Park, CA] :
PY  - 1995.
T1  - Time drill :an introduction to geologic time /
TI  - Time drill :an introduction to geologic time /
VL  - 95-805A
ER  -