Brightness Reef (advance copy) by David Brin Book

This was an advance copy from 1995. This bound copy consists of uncorrected page proofs.
This is book one of the Uplift Trilogy. Strange visitors throw a planet of refugees into chaos in this science fiction adventure by the author of New York Times bestseller The Uplift War.
Centuries ago, the Buyur race abandoned Jijo. Now off-limits to settlers, it’s warded by guardian machines who will protect the planet until the Institutes of the Five Galaxies declare Jijo ready–in another million years–for new civilization. But mere laws and guardians…