TY  - RPRT
TI  - A general earthquake observation system (GEOS)
AU  - Roger D. Borcherdt
AU  - Edward G. Jensen
AU  - G. Maxwell
AU  - J. B. Fletcher
AU  - R. McClearn
AU  - John R. Van Schaack
AU  - R. E. Warrick
PY  - 1983
UR  - https://pubs.usgs.gov/publication/70234362
ID  - 70234362
ER  -