TY - BOOK AU - Cravotta, Charles A., CN - TC801 CN - TD427.N5 CN - TC801 CY - [Reston, Va.] : CY - Denver CO : DA - 1997 [i.e., 2002]. ID - 255167 KW - Nitrogen KW - Water KW - Radioactive tracers in water pollution research LK - http://purl.access.gpo.gov/GPO/LPS22447 LK - http://catalog.hathitrust.org/api/volumes/oclc/36597737.html N1 - "Prepared in cooperation with the Pennsylvania Department of Environmental Protection, Bureau of Soil and Water Conservation." N1 - Shipping list no.: 2002-0121-P. PB - U.S. Dept. of the Interior, U.S. Geological Survey ; PB - U.S. Geological Survey, Branch of Information Services, PP - [Reston, Va.] : PP - Denver CO : PY - 1997 [i.e., 2002]. SN - 0607872071 T1 - Use of stable isotopes of carbon, nitrogen, and sulfur to identify sources of nitrogen in surface waters in the lower Susquehanna River Basin, Pennsylvania / TI - Use of stable isotopes of carbon, nitrogen, and sulfur to identify sources of nitrogen in surface waters in the lower Susquehanna River Basin, Pennsylvania / UR - http://purl.access.gpo.gov/GPO/LPS22447 UR - http://catalog.hathitrust.org/api/volumes/oclc/36597737.html VL - 2497 ER -