The Athenian Empire (Guides to the Coinage of the Ancient World) — Kroll, John H.

Athens Burning: The Persian Invasion of Greece and the Evacuation of Attica (Witness to Ancient History) — Robert Garland

Betrayer of Worlds: Prelude to Ringworld (Fleet of Worlds series Book 4) — Lerner, Edward M.

The Death of Caesar: The Story of History's Most Famous Assassination — Barry Strauss

Destroyer of Worlds (Fleet of Worlds series Book 3) — Lerner, Edward M.

Fate of Worlds (Ringworld Book 5) — Lerner, Edward M.

From Caesar to Augustus (c. 49 BC–AD 14) (Guides to the Coinage of the Ancient World) — Clare Rowan

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Project Pendulum

Robert Silverberg

June 15, 1987 · Hardcover · Walker & Company · 200 pp

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First edition · ISBN 9780802767127 · English · US · Dewey 973.917/092/4 1 · LC E807 .D45 1987

Science Fiction

Hardcover

Project Pendulum is the first practical experiment with time travel. As time mechanics requires that the two travellers' masses be precisely matched, the first travellers are a pair of identical twins. For paleontologist Sean Gabrielson the chance to journey back to the age of donosaurs was worth any risk. For his physicist prother, Eric, the chance to see ninety-five million years in the future was equally irrestisible. What enither planned on, however, was how the inhabitants of those times would react to their presence. But, once their ride through time begins, there is no way for either to leave the experiment un til they reach Time Ultimate, the outer limits of Pendulum's reach.