"A Del Rey book"--T.p. verso.

"The newly discovered planet of Senisran was a veritable paradise. Its vast oceans were dotted with thousands of lush islands containing vast deposits of rare-earths and minerals. But Senisran was also the Humanx Commonwealth's problem child, for each island was inhabited by a different tribe of aboriginal natives whose customs and tribal rites varied from island to island. Each had to be negotiated with separately for mining rights, and the Commonwealth was locked in a race against the vicious AAnn Empire to secure those rights."--BOOK JACKET. "Now the clans of the Parramat Archipelago on Senisran were resisting entreaties by the Commonwealth and AAnn alike. And so xenologist and first-contact specialist Pulickel Tomochelor was dispatched from Earth to handle this most sensitive and stubborn negotiation. More comfortable with aliens than with his own species, and confident in his extraordinary ability to communicate with them, Pulickel looked forward to a short assignment and a triumphant return to Earth."--BOOK JACKET. "But he hadn't counted on the incredible secret of Parramat: the strange green stones that the natives used to bless the crops, ensure plentiful fishing, heal the injured and ill, and control the weather. For within those stones lay an awesome technology the origin of which was lost in time - a technology that had to be kept from the AAnn at any cost."--BOOK JACKET.