Series
The Expendables
We don't know whether this one is finished.
Nobody has confirmed the status of this series yet. That's a gap in our data, not a verdict on the books.
3 books here · 1977
Publication order
This is publication order — nobody has confirmed a different reading order for this one yet.
2
The rings of Tantalus
· Edmund Cooper
3
The War Games of Zelos
· Edmund Cooper
4
The venom of Argus
· Richard Avery