Interpretation of the nitrogen isotopic composition of Precambrian sedimentary rocks: Assumptions and perspectives
M. Ader, C. Thomazo, P. Sansjofre, V. Busigny, D. Papineau, R. Laffont, P. Cartigny, G.P. Halverson
Chemical Geology
http://www.sciencedirect.com/science/article/pii/S000925411630064X
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