Description The dossier collects two invitation cards to the meeting in Galleria Martano for the presentation of "Process of detection" that Piero Rambaudi had elaborated in 1972: "Investigation of a system" and "Analysis of a terrain". The presentation was organized on the occasion of the release of the book "Piero Rambaudi. Division of an area 1966-1968", curated by Mirella Bandini Student.