"Topsy-Turvy" is an adventure novel by Jules Verne, published in 1889. It is a sequel to "From the Earth to the Moon", featuring the same characters from the Baltimore Gun Club but set twenty years later. Like some other books of his later years, in this novel Verne tempers his love of science and engineering with a good dose of irony about their potential for harmful abuse and the fallibility of human endeavors.
by Jules Verne
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