The Double Invaders
John T. Phillifent
Saga of Lost Earths
Emil Petaja
The Kalevala (1)
The Star Mill
The Kalevala (2)
The Nets of Space
The Path Beyond the Stars
The Time Twister
The Prism
Doom of the Green Planet
The Green Planet (2)
Tramontane
The Kalevala (4)
The Stolen Sun
The Kalevala (3)