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Isaac Asimov's Robot City: Perihelion is a book written in 1988 by William F. Wu. It is part of the series Isaac Asimov's Robot City, which was inspired by Isaac Asimov's Robot series.
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Isaac Asimov's Robot City: Cyborg is a 1987 novel by William F. Wu. It is part of the series Isaac Asimov's Robot City, which are inspired by Isaac Asimov's Robot series, and his Foundation novels.
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