TY  - RPRT
TI  - Penicillin resistance in soil bacteria is an index of soil metal content near a porphyry copper deposit and near a concealed massive sulfide deposit
AU  - J.R. Watterson
AU  - L.A. Nagy
AU  - D.M. Updegraff
PY  - 1984
DO  - 10.3133/ofr8416
UR  - https://pubs.usgs.gov/publication/ofr8416
ID  - ofr8416
ER  -