TY  - RPRT
TI  - Engelmann Spruce (Picea engelmannii) as a biological monitor of changes in soil metal loading related to past mining activity
AU  - K.M. Witte
AU  - R. B. Wanty
AU  - W.I. Ridley
PY  - 2004
DO  - 10.1016/j.apgeochem.2004.01.022
UR  - https://pubs.usgs.gov/publication/70026705
ID  - 70026705
ER  -