Berlin, Akademie der Wissenschaften, 1931. 4to. Orig. printed wrappers. Small nicks to margin of wrapper. ""Sitzungsberichte der Preussischen Akademie der Wissenschaften"", issue XII, pp. 233-247. Einstein paper: pp. 235-237, Schrödinger paper: pp. 238-247.
Reference : 38899
Both papers first edition. - Weil No 179.
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