Exner, Wilhelm Franz (1840-1931) Walla, Ferdinand - rys.
Exner, Wilhelm Franz (1840-1931)
Exner, Wilhelm Franz (1840-1931) Pfaff, Carl
Exner, Wilhelm Franz (1840-1931) Pfaff, Carl
Deševoj, M.[ihail] A.[leksandrovič]
Exner, Wilhelm Franz (1840-1931)
Exner, Wilhelm Franz (1840-1931)