Podkayne of Mars
From Wikipedia, the free encyclopedia.

Podkayne of Mars is a science fiction novel by Robert Heinlein published in 1963 about a selfish brat of a genius and his much nicer older sister, who take a trip from Mars to Venus with their under-rated uncle. Gritty examination of deep issues of good and evil.

The original article can be found at: http://en.wikipedia.org/wiki/Podkayne_of_Mars.
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