¹Timothy J.McCoy, ¹Amy E.Marquardt, ^2,3John T.Wasson, ⁴Richard D.Ash, ^1,5Edward P.Vicenzi
Journal of Archaeological Science 81, 13-22 Link to Article [https://doi.org/10.1016/j.jas.2017.03.003https://doi.org/10.1016/j.jas.2017.03.003]
¹Dept. of Mineral Sciences, National Museum of Natural History, 10th and Constitution Aves NW, Smithsonian Institution, Washington, DC 20560-0119, USA
²Dept. of Earth, Planetary and Space Sciences, University of California, Los Angeles, CA 90095-1567, USA
³Dept. of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095-1567, USA
⁴Dept. of Geology, University of Maryland, College Park, MD 20742, USA
⁵Museum Conservation Institute, Smithsonian Institution, 4210 Silver Hill Road, Suitland, MD 20746, USA

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