Title: Trudy vosʹmykh Chteniĭ, posvi͡ashchennykh razrabotke nauchnogo nasledii͡a i razvitii͡u ideĭ K.Ė. T͡Siolkovskogo, Kaluga, 14-17 sent. 1973 g
Subjects: Congresses
People: K. T︠S︡iolkovskiĭ (1857-1935)