Dust
Hugh Howey
Silo (3)
The Skies of Pern
Anne McCaffrey
Dragonriders Of Pern (16)
Magi'i Of Cyador
L.E. Modesitt
Recluce (10)
God Emperor Of Dune
Frank Herbert
Dune (4)
Changelings
Anne McCaffrey & Elizabeth Ann Scarborough
Twins of Petaybee (1)