TY - RPRT TI - Principal facts for 548 new gravity stations in the Long Valley Caldera and vicinity, California AU - C. W. Roberts AU - R. F. Sikora AU - R.C. Jachens PY - 1987 DO - 10.3133/ofr8777 UR - https://pubs.usgs.gov/publication/ofr8777 ID - ofr8777 ER -