‎"EINSTEIN, ALBERT. - PIONEERWORK IN GLOBULAR CLUSTER DYNAMICS‎
‎Eine einfache Anwendung des Newtonschen Gravitationsgesetzes auf die Kugelförmigen Sternhaufen. (A Simple Application of the Newtonian Law of Gravitation to Globular Star Clusters)‎

‎Berlin, Julius Springer, 1921. Lex8vo. Orig. printed wrappers. Offprint/Sonderdruck from ""Der Festschrift der Kaiser Wilhelm Gesellschaft zur Förderung der Wissenschaften zu ihrem 10jährigen Jubiläum"". Pp. 50-52. A small tear to right margin (1 cm), otherwise fine and clean. At foot frontwrapper ""Nicht im Handel"".‎

Reference : 46469

‎First edition, the offprint issue, of this pioneerwork in globular cluster physics.""In his paper on M13 (Einstein 1921) concluded that the non-luminous mass contributes no higher order of magnitude to the total mass than does the luminous mass.To my knowledge this has been Einstein's only contact with globular clusters. As in other issues, his claim still holds.""(Tom Richtler).Weil:117 - Boni:123.‎