This is an Omnibus edition of the first three books in the Pern series:
After ten long Turns, Lessa was ready to come out of hiding to claim her birthright and become Weyrwoman of Benden. But suddenly, the deadly silver Threads once again threatened all Pern with destruction. The mighty telepathic dragons were fewer in number, not nearly enough to protect the planet in its hour of greatest peril... until Lessa hatched a daring and dangerous scheme to rally support from people who had long ago ceased to exist!
Another Turn and the deadly silver Threads began falling again. The bold dragonriders took to the air once more to destroy the shimmering strands before they hit the ground. But F'lar knew he had to find a better way to protect his beloved Pern, before the Oldtimers could breed any more dissent... before his brother F'nor could launch another suicide mission... and before those dratted fire-lizards could stir up any more trouble!
The White Dragon (1978)
Never before had there been as close a bond as that between adventurous Lord Jaxom and his extraordinary pure white dragon, Ruth. Though Ruth was a dragon of many talents, almost everyone on Pern thought he was a runt. But Jaxom knew better, knew he could teach his dragon to fly and to destroy the deadly silver threads... a belief that put them botgh in the path of danger and in a position to prevent the biggest disaster of all!
Original title: The Dragonriders of Pern
Genre: Fiction→ Science Fiction→ Science Fantasy