Não informado. Soviet-bloc research in geophysics, astronomy ans space. Joint Publications Research Service.
Lua i Stíl Chicago (17ú heag.)Não informado. Soviet-bloc Research in Geophysics, Astronomy Ans Space. Arlington, Wash: Joint Publications Research Service.
Lua MLA (8ú heag.)Não informado. Soviet-bloc Research in Geophysics, Astronomy Ans Space. Joint Publications Research Service.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.