1. Geohydrology and limnology of Walden Pond, Concord, Massachusetts Author/Creator: Colman, John A., author Publication/Creation: Northborough, Massachusetts : U.S. Department of the Interior, U.S. Geological Survey, 2001 Resource Type: Book Access & Availability: Loading
2. Hydrology and trophic ecology of Walden Pond, Concord, Massachusetts Author/Creator: Friesz, Paul J. Publication/Creation: Reston, VA : U.S. Dept. of the Interior, U.S. Geological Survey, [2001] Resource Type: Map Access & Availability: Loading
3. Geohydrology and limnology of Walden Pond, Concord, Massachusetts Author/Creator: Colman, John A. Publication/Creation: Northborough, MA : U.S. Geological Survey, U.S. Dept. of the Interior, 2001 Resource Type: Book Access & Availability: Loading