TY  - BOOK
AU  - Durkin,John
AU  - Greenfield,Roy
TI  - Evaluation of the seismic system for locating of trapped miners
PY  - 1981///
CY  - Bureau of Mines, Washington
PB  - U.S. Dept. of the Interior
KW  - Mine rescue work
KW  - Equipment and supplies
KW  - Seismometers
ER  -