Title: Trudy VII Obʺedinennykh nauchnykh chteniĭ po kosmonavtike, posvi͡ashchennykh pami͡ati vydai͡ushchikhsi͡a sovetskikh uchenykh--pionerov osvoenii͡a kosmicheskogo prostranstva
Subjects: Astronautics, Celestial mechanics, Congresses