TY  - RPRT
TI  - A general earthquake-observation system (GEOS)
AU  - R. D. Borcherdt
AU  - Joe B. Fletcher
AU  - E.G. Jensen
AU  - G.L. Maxwell
AU  - J.R. VanSchaack
AU  - R.E. Warrick
AU  - E. Cranswick
AU  - M.J.S. Johnston
AU  - R. McClearn
PY  - 1985
DO  - 10.1785/bssa0750061783
UR  - https://pubs.usgs.gov/publication/70012977
ID  - 70012977
ER  -