O planeta secreto
From Author Wars - https://authorwars.com/publications/o-planeta-secreto-373654.html
Overview:
- Title: O planeta secreto
- Author: E. E. 'Doc' Smith
- Year: 1979
- Publisher: Livros do Brasil
- Pages: 240
- Binding: Paperback
- Type: Novel
- Title Reference: O planeta secreto
- Notes: Apparent first Portuguese printing. {{Tr|{{A|Eurico da Fonseca}}}}. Data retrieved from bibliowiki.com.pt Author's name on cover: E. E. "Doc" Smith On back cover there is an image of the cover of the next publication series #266.