TY  - RPRT
TI  - Changes in element contents of four lichens over 11 years in the Boundary Waters Canoe Area Wilderness, northern Minnesota
AU  - James P. Bennett
AU  - C. M. Wetmore
PY  - 1999
DO  - 10.1016/s0098-8472(98)00055-0
UR  - https://pubs.usgs.gov/publication/1004110
ID  - 1004110
ER  -