Nebula Alert is a 1967 science fiction novel by Australian author A. Bertram Chandler. The novel forms a part of the author's "Empress Irene" series of stories and was originally released as an Ace Double (G-632), backed by The Rival Rigelians by Mack Reynolds.
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Placement
- Empress Irene — #3
- contained in Nebula Alert / The Rival Rigeliansomnibus