1
Published: 2007
Superior document: Integrated investigations of environmental effects of historical mining in the Animas river watershed, San Juan County, Colorado 2
2
Published: 2007
Superior document: Integrated investigations of environmental effects of historical mining in the Animas river watershed, San Juan County, Colorado 1
3
Superior document: U. S. Geological Survey professional paper 1651
4
Published: 1972-1987