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. 2019 Mar 20;14(3):e0213173. doi: 10.1371/journal.pone.0213173

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© 2019 Di Maida et al

This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Fig 3 — Carbon (δ¹³C) and nitrogen (δ¹⁵N) isotope composition of collagen extracted human and faunal remains recovered at Riparo di Fontana Nuova. The x-axis covers most of the variation in δ¹³C values recorded in Mediterranean contexts from fully terrestrial to marine [36].