Creature from the Black Lagoon
Julian May
Monsters Series (1)
Conqueror's Moon
Boreal Moon (1)
The Many-Coloured Land
Saga of the Pliocene Exile (1)
Blood Trillium
Trillium / World of the Three Moons (2)
The Blob
Black Trillium
Marion Zimmer Bradley & Julian May & Andre Norton
Trillium / World of the Three Moons (1)
The Adversary
Saga of the Pliocene Exile (4)