TY  - RPRT
TI  - A regional geochemical reconnaissance, north-central Sonora, Mexico; techniques and analytical data
AU  - James G. Frisken
AU  - Elwin L. Mosier
AU  - Robert L. Turner
PY  - 1981
DO  - 10.3133/ofr81795
UR  - https://pubs.usgs.gov/publication/ofr81795
ID  - ofr81795
ER  -