The Goblin Reservation by Clifford D. Simak

A mid-20th-century scientist is brought into a far future where extinct animals, mythic beings and multiple alien species coexist with humanity; confronting academic politics, bureaucratic machinations and strange new laws, he becomes embroiled in a mysterious theft and a web of intrigue that forces him to use wit, scholarship and moral courage to unravel competing interests and survive in a world where the fantastic and the scientific mingle.

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