21 days of drawing : International summer seminar for advanced studies. - Fondazione Antonio Ratti, Como (Como : Fondazione Antonio Ratti, 1988)
Tilson, Joe ; Fieschi, Giannetto ; Somaini, Francesco ; Collina, Giuliano
21 days of drawing : International summer seminar for advanced studies, Fondazione Antonio Ratti, Como, 18th July to 6th August, 1988
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