a film by Francesco Clerici ; Velasco Vitali, Fonderia Artistica Battaglia present ; in collaboration with Comune di Milano, FAI Fondo Ambiente Italian, Fondazione Cologni dei Mestieri d'Arte ; directed, filmed and edited by Francesco Clerici ; production, Velaso Vitali, Fonderia Artistica Battaglia
from Cinema 5 ; Documento-Film ; CCC Filmkunst ; adaptation and screenplay by Ugo Pirro, Vittorio Bonicelli ; produced by Gianni Hecht Lucari for Documento Film and Arthur Cohn ; directed by Vittorio De Sica