Title: Trudy Sedʹmykh chteniĭ, posvi͡ashchennykh razrabotke nauchnogo nasledii͡a i razvitii͡u ideĭ K.Ė. T͡Siolkovskogo, Kaluga, 14-16 senti͡abri͡a 1972 g
Subjects: Astronautics, Congresses, Rockets (Aeronautics)
People: K. T︠S︡iolkovskiĭ (1857-1935)