Search query: poul anderson world without stars

Product: The Van Rijn Method (The Technic Civilization Saga Book 1)
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The Buck Starts Here!
Think there's an unbridgeable gulf between human and alien thought Not so! There's a common tongue, all right -- and Nicholas Van Rijn speaks it fluently: TRADE. For behind the buffoonish blarney and bawdy bonhomie of the Falstaffian Van Rijn is a man who gets things done. A born wheeler-dealer who usually leaves both sides better off in the bargain. (While pocketing a hefty cut of the profits himself, of course!)
With The Man Who Counts and a passel of other tales included, this is the first of three volumes set to contain the complete cycle of “Polesotechnic League” books and stories by transcendently-gifted science fiction master (how does seven Hugos and three Nebula Awards strike you ) Poul Anderson – and starring Nicholas Van Rijn, his most famous character of all!
At the publisher's request, this title is sold without DRM (DRM Rights Management).

Product: WORLD WITHOUT STARS "Anderson
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Product: Worlds of Poul Anderson
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Ace Books, 1974. Mass market paperback. Collects three short novels by this Grand Master of science fiction:
War of Two Worlds (1959)
Planet of No Return (1956)
World Without Stars (1967)

Product: The Corridors of Time
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A young man from the twentieth century is recruited to fight in a war that rages throughout time in this classic science fiction adventure from a multiple Hugo and Nebula Award–winning master.
College student, ex-marine, and martial artist Malcolm Lockridge is in prison awaiting his trial for murder when he receives an unexpected visit from an extraordinarily beautiful woman named Storm. Claiming to be a representative of the Wardens, a political faction from two thousand years in the future, Storm offers the astonished young man a proposition: freedom in return for his assistance in recovering an unspecified lost treasure. But it is not long before Malcolm realizes that, in truth, he’s been recruited as a soldier in the Wardens’ ongoing war against their rivals, the Rangers. And this war is different from any that has ever been fought, because the battlefield is not a place but time itself.

Traveling backward and forward through corridors connecting historical epochs separated by thousands of years, Malcolm is soon embroiled in a furious conflict between the forces of good and minions of evil. But the deeper he is pulled into this devastating time war, the clearer Malcolm’s ultimate role in humankind’s destiny becomes, causing the troubled young soldier from the twentieth century to question whether he’s been chosen to fight on the side of good or evil . . . and if such a distinction even exists.