"The racial difference has led to the formation of three major Volk groups in the European area: the Germanic, the Romance, and the Slavic language family (although the designation Germanic, Romance, and Slavic is primarily a linguistic concept and by no means covers the racial composition of the Volk). The racial composition of the Volk is guided by the racial basic stock, and this language circle is often strongly influenced by the racial admixture of its respective neighboring Volk. The Germanic Volk is characterized by a predominantly Nordic blood. In their relationship to the German Volk, we therefore designate the Scandinavian Volk as "stammesgleich" (of the same tribal origin), the Romance and the Slavic Volk as "stammesfremd" (of foreign tribal origin), because they possess a smaller proportion of Nordic blood and their racial core is not Nordic."

— Egon Leuschner

Source: Nationalsozialistische Fremdvolkpolitik, Herausgeber: Rassenpolitisches Amt der NSDAP. (um 1942, 41 S., Scan). p.16.

@Hateslav