This article is from the Dune FAQ, by Alan Schwartz with numerous contributions by others.
Yes. Many of the books in the "Dune" series have been published serially
in different magazines. Most of these serialisations represent the first
publication of each novel.
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5.5.1 "Dune"
_Dune" was serialised in "Analog: Science Fact, Science Fiction" in two
separate series. The first was titled "Dune World" and ran from Dec.
1963 to Feb. 1964. The second was titled "Prophet of Dune" and ran from
Jan. 1965 to May 1965. The publication was illustrated by John
Schoenherr. This was the first publication of "Dune", and differs
substantially from the text of the book.
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5.5.2 "Dune Messiah"
_Dune Messiah" was serialised in "Galaxy" from July 1969 to Nov. 1969.
The serialisation was illustrated by Jack Gaughan and represented the
first publication of the novel. The text varies somewhat from the book
version, being appreciably shorter, and includes an alternative first
chapter supposedly written by Bronso of Ix.
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5.5.3 "Children of Dune"
_Children of Dune" was serialised in "Analog: Science Fact, Science
Fiction" from Jan. 1976 to April 1976. It was illustrated by John
Schoenherr.
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5.5.4 "God Emperor of Dune"
An extract from "God Emperor of Dune" was published in "Playboy" Jan.
1981. It covered the arrival of Duncan Idaho on Arrakis.
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5.5.5 "Heretics of Dune"
An extract from "Heretics of Dune" was published in "Omni" March 1984.
It consists of a slightly condensed version of the sixth chapter of the
book.
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5.5.6 "Dune: House Atreides"
An extract of "House Atreides" was released in "Playboy" Nov. 1999. It
detailed the young Duncan Idaho's escape from the Harkonnens on Giedi
Prime.
 
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