Friedmann's Cosmology: Zeitschrift für Physik (Volumes 10, 16, 21).
Braunschweig & Berlin, Germany: Friedr. Vieweg & Sohn/Julius Springer, 1922, 1923, 1924. Hardcover. First Edition. Volume 10: iv, 413 pp. 8vo; Volume 16: iv, 409, [1] pp. 8vo; Volume 21: iv, 382 pp, 8vo. Each volume is ex-library with brown patterned paper boards, lighter brown cloth spines and corner tips; gold embossed titling to spine. Library stamps within, including stamps on title page of each volume, very clean with card pocket remaining on the rear pastedown of each volume. All text in German.
Alexander Alexandrovich Friedmann (1888-1925) was a Russian mathematician and physicist who built upon Einstein's theory of relativity and further expanded his own theories that the universe has both homogeneous (looks the same from every location) and isotropic (looks the same in every..... More