Наука и жизнь #04 1940
Nauka i Zhizn Magazine
The Black Swan
Mercedes Lackey
Крокодил, 1939 , № 33
Krokodil Magazine
Pandora's Legions
Christopher Anvil
More Tales of the Black Widowers
Asimov, Isaac
Black Widowers (2)
The Return of the Black Widowers
Black Widowers (6)