TY - BOOK ID - 21650261 TI - Use of stable isotopes of carbon, nitrogen, and sulfure to identify sources of nitrogen in surface waters in the lower Susquehanna River Basin, Pennsylvania AU - Cravotta, Charles A. AU - Pennsylvania department of environmental protection PY - 2002 VL - 2497 SN - 0607872071 9780607872071 PB - Washington : US geological survey, DB - UniCat KW - Radioactive tracers in water pollution research KW - Point source identification. KW - Nitrogen KW - Water KW - Environmental aspects KW - Pollution KW - Hydrology KW - Group 15 elements KW - Nonmetals KW - Pollution&delete& KW - Point source identification KW - Research KW - Nitrogen - Environmental aspects - Susquehanna River Watershed. KW - Water - Pollution - Susquehanna River Watershed - Point source identification. KW - Radioactive tracers in water pollution research - Susquehanna River Watershed. UR - https://www.unicat.be/uniCat?func=search&query=sysid:21650261 AB - ER -