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      Proteus in the Underworld

      by Charles Sheffield
      Published
      May 1995
      Main Genre
      Science Fiction Sci-Fi
      Rating
      Pages
      320
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      About This Book

      In the 22nd century, biofeedback techniques have enabled humans the ultimate expression—the ability to transform the body into any viable form. What began as an innocent technique to reduce anxiety without drugs has raised fundamental questions about what it is to be human. Enter the Humanity Test....

      Genres & Themes

      Genres

      Speculative Fiction

      Subgenres

      Science Fiction

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      Formats & Editions

      Browse the different covers, formats, and publication history for this title.

      Paperback

      Paperback edition cover
      Mass Market Paperback
      First Edition May 1995 Baen ISBN 0671876597
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      eBook

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      eBook
      -- Not Selected ISBN B00CI79G1M
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      Audio

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      Audible
      Feb 2013 Audible Studios ISBN B00BBZPZVM
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      MP3 CD
      May 2016 Brilliance Audio ISBN 1511396350
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