TY  - RPRT
TI  - Tilt precursors before earthquakes on the San Andreas fault, California
AU  - M.J.S. Johnston
AU  - C.E. Mortensen
PY  - 1974
DO  - 10.1126/science.186.4168.1031
UR  - https://pubs.usgs.gov/publication/70011055
ID  - 70011055
ER  -