Doona

Decision at Doona (1969) .
	"Doona was a jewel of a planet - a pastoral paradise with rivers and lakes and mountains and seas. The Hrrubans needed it to revitalise their decadent race, to give them back something of the old pioneering spirit. The Terrans needed it as an overspill from the hysterical overcrowding of Earth, a place to breathe and move without restrictions. So they both sent a colonizing party - and they both began to think of Doona as home. And then one day the smooth-skinned two-legged mammal known as Man, came face to face with the furry, four-pawed mammal known as Hrruban..."

Crisis on Doona (and Jody Lynn Nye) (1992) .
	"More than twenty-five years ago, the first Humans had set foot on Doona and had found a beautiful, unspoilt planet. But they had also found that they were not alone. Their early survey had completely ignored or missed the fact that the planet was already settled - by the alien, feline Hrrubans. The ensuing conflict led to the historic Decision at Doona - a social experiment in living together that was to last for a quarter of a century. Now that contract has run out and is up for renewal. Everything that Human and Hrruban have worked for - particularly the delicate alliance itself - is in peril and could be destroyed utterly..."

Treaty Planet /Treaty At Doona (and Jody Lynn Nye) (1994) .
	"The huge, black spaceship in orbit around Doonarrala is apparently unarmed and seems to present no immediate threat. And yet its very presence and size are menacing to some. A classified tape, seen only by the military, shows that it bears a strong resemblance to another ship found derelict and looming over a planet devastated by war. For Todd Reeve, leader of the Human colony on Doonarrala, and for his Hrruban friend, Hriss, the ship represents an opportunity for their two species to extend the hand of friendship to another. For others, from both Earth and Hrruba, the ship and its inhabitants are a threat of such magnitude that they will stop at nothing to sabotage Todd's efforts at communication, waiting only until their own forces are in place before acting."

Omnibus

Doona (and Jody Lynn Nye) (2004) .
	"For the first time in one volume - two complete novels set on the remarkable world of Doona, by two of today's most acclaimed literary imaginations. Crisis on Doona. More than 25 years ago, the first humans came to the unspoiled planet of Doona, they ignored one important fact: They were not alone Doona was the home of the catlike alien race of Hrrubans. And so began an experiment in cohabitation that lasted for a quarter of a century. Their contract is now up for renewal. Treaty at Doona. Now, the wild planet they tamed, the home they fought for, and the delicate alliance they share could be destroyed forever as a new threat looms. The Gringgs are not the first alien visitors to the planet, but they are the first to offer friendship - and a proposal for a prosperous future. But not everyone trusts the new guests. Not everyone believes in their motives. And as a battle of diplomatic unrest ensues, Doona once again falls under the dark shadow of uncertainty - and self destruction…"