He completed what became known as the Calcutta trilogy: Pratidwandi (1970), Seemabaddha (1971), and Jana Aranya (1975), three films that were conceived separately but had thematic connections.
Ia menyelesaikan apa yang menjadi dikenal sebagai trilogi Kalkuta: Pratidwandi (1970), Seemabaddha (1971), dan Jana Aranya (1975), tiga film yang terpisah namun memiliki hubungan tematik.