A planet where giant octopus live, observed by aliens. The owner and pilot of a flying saucer personally tells in detail how he makes his flying saucer totally invisible to radar. More
Stories about another planet. The planet has unusual visitors who are transparent like air and invisible. Two very important scientific theories are in this book. The owner and pilot of a flying saucer explains in thorough clear detail the physics of how he makes his flying saucer completely invisible to radar.
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