TY  - RPRT
TI  - A comparison of rock and soil samples for geochemical mapping of two porphyry-metal systems in Colorado
AU  - George J. Neuerburg
AU  - H. N. Barton
AU  - J.R. Watterson
AU  - E. P. Welsch
PY  - 1978
DO  - 10.3133/ofr78383
UR  - https://pubs.usgs.gov/publication/ofr78383
ID  - ofr78383
ER  -