Title: Trudy XXVI chteniĭ, posvi︠a︡shchennykh razrabotke nauchnogo nasledii︠a︡ i razvitii︠u︡ ideĭ K.E. T︠S︡iolkovskogo, Kaluga, 17-20 senti︠a︡bri︠a︡ 1991 g.
Subjects: Congresses, Aerospace industries
People: K. T︠S︡iolkovskiĭ (1857-1935)