found: Jacoby, H. Otto Rühle zur Einführung, 1985:cover p. 4 (b. 1874; d. 1943)
found: LC data base, 4-29-88(hdg.: Rühle, Otto, 1874-1943)
found: His Kakvo tri︠e︡ba da bŭde narodnoto uchilishte, 1909:t.p. (Otto Ri︠u︡le)
found: Meyers enzykl. Lex., 1971:v. 20, p. 437 (Rühle, Otto; pseud.: Carl Steuermann)
found: Narodnai︠a︡ shkola v Germanīi, kak ona estʹ, 1906:t.p. (O. Ri︠u︡le)
found: Umgang mit Kindern, c1924:t.p. (Otto Rühle) spine (O. Rühle)
found: The case of Leon Trotsky, 1968:title page (Otto Ruehle)
