Isaac Asimov

Prélude à Fondation est un roman de science-fiction d’Isaac Asimov paru en 1988.

Puzzles of the Black Widowers is a collection of mystery short stories by American author Isaac Asimov, featuring his fictional club of mystery solvers, the Black Widowers. It was first published in hardcover by Doubleday in January 1990, and in paperback by Bantam Books the same year. The first British edition was …