5 books in series

Canopus in Argos

Canopus in Argos is a 5-book series with 5 released primary works first released in 1979 with contributions by Doris Lessing.

Re
The marriages between zones three, four, and five
The Sirian Experiments
Cover 1

The Making of the Representative for Planet 8

The Sentimental Agents in the Volyen Empire