Rosenberg, David.
Many Worlds: The Discovery of Galactic Systems, Vol-12 / - First Ed. / - Louisville : Touchstone Publishing Company , 1964 - p.191 :
Not Entered
A / L2.12
Many Worlds: The Discovery of Galactic Systems, Vol-12 / - First Ed. / - Louisville : Touchstone Publishing Company , 1964 - p.191 :
Not Entered
A / L2.12