@Article{bg-4-75-2007, AUTHOR = {Altabet, M. A.}, TITLE = {Constraints on oceanic N balance/imbalance from sedimentary 15N records}, JOURNAL = {Biogeosciences}, VOLUME = {4}, YEAR = {2007}, NUMBER = {1}, PAGES = {75--86}, URL = {http://www.biogeosciences.net/4/75/2007/}, ISSN = {1726-4170} }