Use of stable isotopes of carbon, nitrogen, and sulfur to identify sources of nitrogen in surface waters in the lower Susquehanna River Basin, Pennsylvania
Print Book, English, 1997
U.S. G.P.O. ; U.S. Geological Survey, Branch of Information Services, Washington, Denver CO, 1997
v, 99 pages : illustrations ; 28 cm.
"Prepared in cooperation with the Pennsylvania Department of Environmental Protection, Bureau of Soil and Water Conservation."