How many movies have John Berger and Renato Berta collaborated on?

They have worked on 3 movies together! Their first movie together was The Salamander (1971) while their highest rated movie together was Jonah Who Will Be 25 in the Year 2000 (1976). They have not worked together since Jonah Who Will Be 25 in the Year 2000 (1976). They are most known for their drama films together.