Prinzipielles zur allgemeinen relativitätstheorie. In Ann. Phys. Lpz. 55, 241-244 pp.
Leipzig: 1918. Prinzipielles zur allgemeinen relativitätstheorie. In Annalen der Physik 55, 241-244 pp. Red cloth with gilt lettering on the spine. Bookbinder's embossed stamp of ffep. [Whole volume: 632 pp. + 1 folding plate]. Figs. Text-illust. (210 x 130 mm). Very good+. Approximate English translation of title: "On the foundations..... More