The World of Ptaavs – Larry Niven

Chronologically the first of Niven‘s Known Space books, and also his first published novel. An alien who has been frozen in stasis for eons is awoken. He comes from a former master race (quite literally) and poses a grave danger to humanity.

Solid adventure SciFi with some very clever concepts.

Note: Various editions have the title with or without initial “The”.

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