TY  - RPRT
TI  - Geohydrology and limnology of Walden Pond, Concord, Massachusetts
AU  - John A. Colman
AU  - Paul J. Friesz
PY  - 2001
DO  - 10.3133/wri014137
UR  - https://pubs.usgs.gov/publication/wri014137
ID  - wri014137
ER  -