Cluster is a series of 5 books written by Piers Anthony. Here, you can see them all in order! (plus the year each book was published)
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5 books in this series
The author is Piers Anthony.
There are 5 books in the Cluster series.
The first book was written in 1977, and the last book was written in 1982 (we also added the publication year of each book right above the "View on Amazon" button).