TY  - RPRT
TI  - Enzyme leaching of surficial geochemical samples for detecting hydromorphic trace-element anomalies associated with precious-metal mineralized bedrock buried beneath glacial overburden in northern Minnesota
AU  - Robert J. Clark
AU  - A. L. Meier
AU  - G. Riddle
PY  - 1990
UR  - https://pubs.usgs.gov/publication/70016136
ID  - 70016136
ER  -