The Calculus Case
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'The Calculus Case' was a film adaptation of a Belgian comic book - The Calculus Affair, a part of the popular The Adventures of Tintin by Hergé. It was produced in the late 1960s by the company Belvision. Originally it was a television series made up of several short segments shown but was later adapted into a full length film.
[edit] VHS and DVD
In the 1980s it was released on VHS across Europe.In the early 2000s it was released on DVD.