Peter Ryan
1939
Books
- Planet Earth
- Journey to the planets
- Exploradores y cartógrafos
- Journey to the planets
- UFOer Hvad er de - hvad vil de
- The invasion of the moon, 1957-1970
- UFOs and other worlds
- Deal Maker
- Invasion of the moon, 1969
- Explorers and mapmakers
- The invasion of the moon, 1957-70
- The ocean world
- Explorers and Mapmakers
- Explorers & mapmakers
- Solar system
Author data: Open Library