http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Reconnaissance of mine drainage in the coal fields of eastern Pennsylvania
1 online resource (vi, 54 pages) : illustrations, maps.
by Douglas J. Growitz, Lloyd A. Reed, and Mark M. Beard.
Includes bibliographical references (pages 53-54).
Water-resources investigations report ; 83-4274