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Black Widowers series
1. Tales of the Black Widowers - ASIMOV, ISAAC
2. More tales of the Black Widowers - ASIMOV, ISAAC
3. Casebook of the Black Widowers - ASIMOV, ISAAC
4. Banquets of the Black Widowers - ASIMOV, ISAAC
5. Puzzles of the Black Widowers - ASIMOV, ISAAC
6. The return of the Black Widowers - ASIMOV, ISAAC