Captives of the Flame / The Psionic Menace

From Author Wars - https://authorwars.com/books/captives-of-the-flame--the-psionic-menace-792289.html

Overview:

Title: Captives of the Flame / The Psionic Menace
Author: John Brunner Samuel R. Delany
Year: 1963
Type: Omnibuses

Variant Titles:

1963. Captives of the Flame / The Psionic Menace