TY  - RPRT
TI  - Geologic map of the SP Mountain quadrangle, Coconino County, Arizona
AU  - G. E. Ulrich
AU  - N. G. Bailey
PY  - 1974
DO  - 10.3133/ofr745
UR  - https://pubs.usgs.gov/publication/ofr745
ID  - ofr745
ER  -