TY  - RPRT
TI  - Preliminary catalog of earthquakes in northern Imperial Valley, California, January 1, 1977 to March 31, 1977
AU  - Madeline Schnapp
AU  - Gary S. Fuis
PY  - 1978
DO  - 10.3133/ofr7874
UR  - https://pubs.usgs.gov/publication/ofr7874
ID  - ofr7874
ER  -