Deathworld
Deathworld is the name of a series of science fiction novels by American writer Harry Harrison , including the books "Deathworld" ( first published 1960 , serialized in "Astounding Science Fiction" ) , "Deathworld 2" ( 1964 , initially titled "The Ethical Engineer" and serialized in "Analog" ) and "Deathworld 3" ( 1968 , serialized in "Analog" as "The Horse Barbarians" ) , plus the short story "The Mothballed Spaceship" ( 1973 , written as part of a tribute to John W . Campbell ) . 
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