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Books about Space flight -- Juvenile fiction (sorted by popularity)
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https://sendtokindle.compellingsciencefiction.com/ebooks/20147.opds
Rip Foster Rides the Gray Planet
Harold L. Goodwin
2024-11-13T05:04:59Z
https://sendtokindle.compellingsciencefiction.com/ebooks/18139.opds
Rip Foster in Ride the Gray Planet
Harold L. Goodwin
2024-11-13T05:04:59Z
https://sendtokindle.compellingsciencefiction.com/ebooks/50682.opds
The Planet Mappers
E. Everett Evans
2024-11-13T05:04:59Z
https://sendtokindle.compellingsciencefiction.com/ebooks/60133.opds
Young Visitor to Mars
Richard M. Elam