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\bibitem{Roggy_etal2014} Roggy, J. - C., Schimann, H., Sabatier, D., Molino, J. - F., Freycon, V., \& Domenach, A. - M. (2014). Complementary N Uptake Strategies between Tree Species in Tropical Rainforest. \textit{ISRN}, \textit{2014}(Article ID 427194), 1--6.

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