Title: Trudy XXVII-XXVIII chteniĭ, posvi︠a︡shchennykh razrabotke nauchnogo nasledii︠a︡ i razvitii︠u︡ ideĭ K.Ė. T︠S︡iolkovskogo, Kaluga, 1992 g., 1993 g.
Subjects: Congresses
People: K. T︠S︡iolkovskiĭ (1857-1935)