1. Quality of wet deposition in the Grand Calumet River Watershed, northwestern Indiana, April 29, 1997-April 28, 1998 Author/Creator: Willoughby, Timothy C., author Publication/Creation: Indianapolis, Indiana : U.S. Department of the Interior, U.S. Geological Survey, 2000 Resource Type: Book Access & Availability: Loading
2. Quality of wet deposition in the Grand Calumet River Watershed, Northwestern Indiana, October 17, 1995-November 12, 1996 Author/Creator: Willoughby, Timothy C., author Publication/Creation: Indianapolis, Indiana : U.S. Department of the Interior, U.S. Geological Survey, 2000 Resource Type: Book Access & Availability: Loading