USGS, Nitrate in Ground Water and Stream Base Flow in the Lower  Susquehanna River Basin, Pennsylvania and Maryland, Water-Resources  Investigations Report 97-4146, 1997
Contributors: Geological Survey (U.S.)
Publisher: s.n.
Published: 1997
Place of publication: [S.l
Language: eng
Notes: Shipping List #: 98-0083-P

Shipping List Date: 12/18/97