TY  - BOOK
T1  - National Earthquake Information Center semi-annual technical report
DA  - 1990.
CY  - Denver, Colo. :
VL  - 90-267
CN  - I 19.76:
PB  - National Earthquake Information Center, U.S. Geological Survey,
PP  - Denver, Colo. :
PY  - 1990.
N1  - Cover title.
ID  - 263512
KW  - Earthquakes.
KW  - Seismology
TI  - National Earthquake Information Center semi-annual technical report
ER  -