Cravotta, C. A. (2002). Use of stable isotopes of carbon, nitrogen, and sulfur to identify sources of nitrogen in surface waters in the lower Susquehanna River Basin, Pennsylvania. U.S. G.P.O.] For sale by the U.S. Geological Survey, Branch of Information Services.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Cravotta, Charles A. Use of Stable Isotopes of Carbon, Nitrogen, and Sulfur to Identify Sources of Nitrogen in Surface Waters in the Lower Susquehanna River Basin, Pennsylvania. [Washington, D.C., Denver CO: U.S. G.P.O.] For sale by the U.S. Geological Survey, Branch of Information Services, 2002.
Trích dẫn kiểu MLA (xuất bản lần thứ 9)Cravotta, Charles A. Use of Stable Isotopes of Carbon, Nitrogen, and Sulfur to Identify Sources of Nitrogen in Surface Waters in the Lower Susquehanna River Basin, Pennsylvania. U.S. G.P.O.] For sale by the U.S. Geological Survey, Branch of Information Services, 2002.