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Fig. 6

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Evolution of O/Fe, N/Fe and C/Fe vs. Fe/H. Data sources: Spite et al. (2005, open squares for C, N, O), Lai et al. (2008, X for C, N, O), Primas (2010, filled circles for O), Tan et al. (2009, open triangles for O), Boesgaard et al. (2011, open circles for O), Bensby et al. (2003, filled squares for O), Israelian et al. (2004, filled pentagons for N), Bensby et al. (2006, asterisks for C), Fabbian et al. (2009, filled circles for C).

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