Não informado. Soviet-bloc research in geophysics, astronomy ans space. Joint Publications Research Service.
Chicago-Zitierstil (17. Ausg.)Não informado. Soviet-bloc Research in Geophysics, Astronomy Ans Space. Arlington, Wash: Joint Publications Research Service.
MLA-Zitierstil (8. Ausg.)Não informado. Soviet-bloc Research in Geophysics, Astronomy Ans Space. Joint Publications Research Service.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.