R.F. Starzl (w/F. Pragnell):
Science Fiction Technology and Ideas
See the entry for RF Starzl. Festus Pragnell (Frank William Pragnell) (b. 1905 - d. 1977) was a UK police constable, clerk and writer who published in the pulp magazines in the 1930's and 1940's.
Invention/Technology Source Work (Publication Date)

Prison Planet
A planet (or planetoid) that serves as a jail for solar system offenders.

The Venus Germ (1932)


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