TY  - RPRT
TI  - Preliminary geologic map of the Flagstaff 1 degree by two degrees Quadrangle, Arizona
AU  - George E. Ulrich
AU  - R. Hereford
AU  - L.D. Nealey
AU  - E.W. Wolfe
PY  - 1979
DO  - 10.3133/ofr79294
UR  - https://pubs.usgs.gov/publication/ofr79294
ID  - ofr79294
ER  -