- Author: V. A. Firsoff Author Record # 24312
- Legal Name: Firsoff, Valdemar Axel
- Birthplace: Bila Tserkva, Kiev Governorate, Russian Empire
- Birthdate: 29 January 1912
- Deathdate: 19 November 1981
- Language: English
- Webpages: adsabs.harvard.edu, britastro.org, Wikipedia-EN
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Nonfiction
- Our Neighbour Worlds (1953)
- Strange World of the Moon (1959)
- Life Beyond the Earth (1964)
- Exploring the Planets (1964)