. "gw" . . "Germany." . . "9783427863014" . "3427863018" . . . "Composers--Germany" . . . "Popp" . "Susanne" . "Susanne Popp" . "1944" . . . "Veröffentlichungen des Max-Reger-Institutes, Elsa-Reger-Stiftung Bonn ;" . . "Stein" . "Fritz (Musiker)" . "Fritz (Musiker) Stein" . . . "Stein" . "Fritz" . "Fritz Stein" . "1879" . "1961" . . "9171544" . "9171544" . . . . . . . . . . "1982" . . . . . . "de" . . "Briefe an Fritz Stein" . "Records and correspondence" . "1982" . . . . . . . . . . "Briefsammlung 1907-1916" . . . . "Biography"@en . . . "Reger" . "Max" . "Max Reger" . . . "Briefe an Fritz Stein." . "Online version:" . . "Stein" . "Fritz Wilhelm" . "Fritz Wilhelm Stein" . "1879" . "1961" . . "Composers" . . "Dümmler" . . "Bonn" . . "Reger" . "Max" . "Max Reger" . "1873" . "1916" . . . . "2018-03-10" . . . . .