archivionuvolo 17 March 1977 L'archivio documenti Letter from Nuvolo to Wiener Graphikbiennale direction, 1977 Publication source type: letter for exhibition entry and description of works From: Nuvolo To: Wiener Graphikbiennale direction Venue: Roma Date: March 17, 1977 pages: 3 1977, exhibition entry, letters, Nuvolo, Wiener Graphikbiennale