Les conquérants de Mars / Le secret des XII
From Author Wars - https://authorwars.com/publications/les-conquerants-de-mars--le-secret-des-xii-436792.html
Overview:
- Title: Les conquérants de Mars / Le secret des XII
- Author: Jean de La Hire
- Year: 1955
- Publisher: Éditions d'Hauteville
- Price: F300
- Pages: 222+220
- Binding: Paperback
- Type: Omnibus
- Title Reference: Les conquérants de Mars / Le secret des XII
- Notes:
- Date of publication unknown, but probably 1955, according to bdfi.
- Fantastic is a series of publications made up of unsold copies of Jean de La Hire novels, bound two by two and trimmed to a smaller format, and with identical cover art (a René Brantonne rocket) for each volume.
- The Éditions d'Hauteville is a later name for André Jaeger, the publisher of the novels.
- Note that in this case, the chronological order of the two volumes was inverted, as Les conquérants de Mars is announced at the end of Le secret des XII as a sequel of the latter.
- Price is in "anciens francs" (old francs), in use until 1959 (no decimals).