http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Flood-prevention projects at Pennsylvania anthracite mines
Flood prevention projects at Pennsylvania anthracite mines
1 online resource (various pagings) : illustrations.
Includes bibliographical references (page 25).
Report of investigations / United States Department of the Interior, Bureau of Mines ; R.I. 3868
Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1946
Report of investigations (United States. Bureau of Mines) ; 3868