Title: Iwan I. Leonidov
Subjects: Exhibitions, Constructivism (Architecture), Architecture, Architects, History, Wiener Städtische Allgemeine Versicherung (Firm). Ringturm Exhibition Centre, Wiener Städtische Allgemeine Versicherung (Firm)
Places: Soviet Union
People: Ivan I. Leonidov (1902-1959)