| .אסטרו |
oxygen/hydrogen upper stage (MichaelBurov); oxygen-hydrogen transfer orbit stage (MichaelBurov); O2/H2 upper stage (MichaelBurov); oxygen-hydrogen TOS (MichaelBurov); KVRB (MichaelBurov); oxygen/hydrogen booster (MichaelBurov); O2/H2 booster (MichaelBurov) |
