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The Increased Difficulty of Concentration. New York / The Repertory Theater of Lincoln Center
- Document's type: Programme
- Author: Václav Havel (Author) / Mel Shapiro (Director) / Věra Blackwell (Translation)
- Date of origin: 1. 12. 1969
- Record's ID: 10064
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The Garden Party
- Document's type: Book / Drama
- Author: Václav Havel (Author) / Věra Blackwell (Translation)
- Date of origin: 1969
- Record's ID: 39323
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Smlouva: Grove Press - Václav Havel + Vera Blackwell / Ztížená možnost soustředění
- Document's type: Contract
- Author: Václav Havel (Author) / Věra Blackwell (Translation)
- Date of origin: 30. 12. 1969
- Record's ID: 17773