Meteorologie

First offprint in the original wrappers and new pagination, of this late paper by Einstein about field equations in a Riemannian Space. - Content: This work was written in collaboration with his assistant, the Austrian mathematician Walther Mayer (nicknamed „Einstein's calculator“). In 1928 Einstein already had made use of the Elliptic geometry of German mathematician Bernhard Riemann for his calculations. - Condition: Mint. - Reference: Alicke 149; Schilpp-Shields 250; Weil 180 (quotes the pagination of the first separate printing, p. 257-265).