TY  - RPRT
TI  - Catalog of first motion focal mechanisms, 1986-1987, Volume 2
AU  - Russell E. Needham
PY  - 1990
DO  - 10.3133/ofr88556b
UR  - https://pubs.usgs.gov/publication/ofr88556B
ID  - ofr88556B
ER  -