Proceedings : 18. International Astronautical Congress = 18. Meždunarodnyj Kongress po Astronavtike / ed .-in-chief: Michal Lunc ; 2: Spacecraft systems education
International Astronautical Congress ; 18 ; 1967 ; Belgrade International Astronautical Congress ; 18 (Belgrade) : 1967.
1968
513 S.
8°
Conference Proceedings
English , Russian