Produced by Constanze Hofmann, Jeanette Jordan, Lori Scoggins, Norilan, McMartha, sassi, Siobhan Hillman, Tamise Totterdell, Zara Baxter, Janet Blenkinship and the Online Distributed Proofreading Team at http://www.pgdp.net A Lecture at the Sorbonne, May 22, 1919, in the series of _Conferences Louis Liard_…
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