TY  - RPRT
TI  - Preliminary Digital Geologic Map of the Santa Ana 30' x 60' Quadrangle, Southern California
AU  - D. M. Morton
AU  - Rachel M. digital preparation by Hauser
AU  - Kelly R. Ruppert
PY  - 1999
DO  - 10.3133/ofr99172_ver1
UR  - https://pubs.usgs.gov/publication/ofr99172_ver1
ID  - ofr99172_ver1
ER  -