TY  - RPRT
TI  - Preliminary Digital Geologic Map of the Santa Ana 30' x 60' Quadrangle, Southern California
AU  - D. M. Morton
AU  - Kelly R. digital preparation by Bovard
AU  - Rachel M. Alvarez
PY  - 2004
DO  - 10.3133/ofr99172
UR  - https://pubs.usgs.gov/publication/ofr99172
ID  - ofr99172
ER  -