Naturally Occurring Contaminants in the Piedmont and Blue Ridge Crystalline-Rock Aquifers and Piedmont Early Mesozoic Basin Siliciclastic-Rock Aquifers, Eastern United States, 1994?2008Melinda Chapman, Charles Cravotta, Zoltan Szabo, Bruce Lindsey · First published 2014Open the Tome
Use of Stable Isotopes of Carbon, Nitrogen, and Sulfur to Identify Sources of Nitrogen in Surface Waters in the Lower Susquehanna River Basin (U.S. Geological Survey Water-Supply Paper, 2497)Charles A. Cravotta · First published 1997Open the Tome
Use of stable isotopes of carbon, nitrogen, and sulfur to identify sources of nitrogen in surface waters in the Lower Susquehanna River Basin, PennsylvaniaCharles A. Cravotta · First published 1995Open the Tome
Use of stable isotopes of carbon, nitrogen, and sulfer to identify sources of nitrogen in surface waters in the Lower Susquehanna River Basin, PennsylvaniaCravotta, Charles Angelo III. · First published 1995Open the Tome
