You're looking at a Lot of 6 classic Sci-Fi books by the great Larry Niven.Included are:The Integral TreesWhen leaving Earth, the crew of the spaceship Discipline was prepared for a routine assignment. Dispatched by the all-powerful State on a mission of interstellar exploration and colonization, Discipline was aided (and secretly spied upon) by Sharls Davis Kendy, an emotionless computer intelligence programmed to monitor the loyalty and obedience of the crew. But what they weren’t prepared for was the smoke ring–an immense gaseous envelope that had formed around a neutron star directly in their path. The Smoke Ring was home to a variety of plant and animal life-forms evolved to thrive in conditions of continual free-fall. When Discipline encountered it, something went wrong. The crew abandoned ship and fled to the unlikely space oasis.Five hundred years later, the descendants of the Discipline crew living on the Smoke Ring no longer remember their origins. Earth is more myth than memory, and no recollection of the State remains. But Kendy remembers. And just outside the Smoke Ring, Discipline waits patiently to make contact with its wayward children.The Smoke Ring (Sequel to The Integral Trees) In the free-fall environment of the Smoke Ring, the descendants of the crew of the Discipline no longer remembered their Earth roots -- or the existence of Sharls Davis Kendy, the computer-program despot of the ship. Until Kendy initiated contact once more.Fourteen years later, only Jeffer, the Citizens Tree Scientist, knew that Kendy was still watching -- and waiting. Then the Citizens Tree people rescued a family of loggers and learned for the first time of the Admiralty, a large society living in free fall amid the floating debris called the Clump. And it was likely that the Admiralty had maintained, intact, Discipline's original computer library.Exploration was a temptation neither Jeffer nor Kendy could resist, and neither Citizens Tree nor Sharls Davis Kendy would ever be the same again...Fallen Angels (with Jerry Pournelle & Michael Flynn)Having been shot down over the North Dakota glacier, two Space Habs astronauts find themselves paralyzed by the Earth's gravity and at the center of a ruthless manhunt by the United States government..A Hole In SpaceThe Perfect The invention of displacement booths produced one hell of a crime wave. If a man in, say, Hawaii could commit murder in, say, Chicago and be back in the time it would take him to visit the men's room, he would have a perfect alibi. And the police would have a problem.But that's only one of the problems found in Larry Niven's universe, in this collection of stories all about teleportation, deep space, black holes, artificial worlds and Louis Wu--our old friend from the "Known Space" cycle--Niven once again proves he's a master builder of fantastic worlds!StoriesRammerThe Alibi MachineThe Last Days of the Permanent Floating Riot ClubA Kind of MurderAll the Bridges RustingThere Is a TideBigger Than Worlds$16,940.00The Hole ManThe Fourth ProfessionFlatlanderGil "The Arm" Hamilton was one of the top operatives of ARM, the elite UN plice force. His intuition was unfailingly accurate, his detective skills second to none, and his psychic powers -- esper sense and telekinesis -- were awesome. Now you can read all the classic stories of the legendary ARM operative, collected in one volume for the first time -- plus, an all-new, never-before-published Gil Hamilton adventure! Table of Contents:Death by Ecstasy (1969) • novellaThe Defenseless Dead (1973) • noveletteARM (1975) • novellaPatchwork Girl (1980) • novelThe Woman in Del Rey Crater - noveletteAfterword - essayCrashlanderCrashlander Beowulf Shaeffer has long been one of the most popular characters in Known Space. Now, for the first time ever, Larry Niven brings together all the Beowulf Shaeffer stories--including a brand-new one--in one long tale of exploration and adventure! PLUS--an all-new framing story that pulls together all of Beowulf Shaeffer's adventures and allows Shaeffer and his family to make a clean start at life once and for all!Contents:1 • Ghost • [Known Space] • novelette8 • Neutron Star • [Known Space] • (1966) • novelette32 • At the Core • [Known Space] • (1966) • novelette57 • Flatlander • [Known Space] • (1967) • novelette107 • Grendel • [Known Space] • (1968) • shortstory160 • The Borderland of Sol • [Known Space] • (1975) • novelette 213 • Procrustes • [Known Space] • (1993) • novellaBid with confidence as I have 100% positive feedback for honest descriptions, secure packing and fast shipment.Thanks for looking!