TY  - RPRT
TI  - Chemical element concentrations in four lichens on a transect entering Voyageurs National Park
AU  - James P. Bennett
AU  - C. M. Wetmore
PY  - 1997
DO  - 10.1016/s0098-8472(96)01039-8
UR  - https://pubs.usgs.gov/publication/1004112
ID  - 1004112
ER  -