TY  - RPRT
TI  - Using natural archives to track sources and long-term trends of pollution: an introduction
AU  - Jules Blais
AU  - Michael R. Rosen
AU  - John Smol
PY  - 2015
DO  - 10.1007/978-94-017-9541-8_1
UR  - https://pubs.usgs.gov/publication/70145308
ID  - 70145308
ER  -