Star Trek 01
James Blish
Bantam Novilizations (1)
Наука и жизнь #06 1978
Nauka i Zhizn Magazine
Крокодил, 1987 , № 12
Krokodil Magazine
Крокодил, 1936 , № 28
We Don’t Plummet Out of the Sky Anymore
M. David Blake