McCaffrey, Anne
All the Weyrs of Pern Anne McCaffrey - Ballantine Books 1991 - 404 p - Pern Book 11 .
The dragonriders of Pern have dedicated their lives to fighting Thread, spores that rained on and ravaged the land, and now they finally have the chance to eradicate it forever
0345368924
Colonies
Dragons
Life on other planets
McC 33
All the Weyrs of Pern Anne McCaffrey - Ballantine Books 1991 - 404 p - Pern Book 11 .
The dragonriders of Pern have dedicated their lives to fighting Thread, spores that rained on and ravaged the land, and now they finally have the chance to eradicate it forever
0345368924
Colonies
Dragons
Life on other planets
McC 33