by Upendranath Ashk is a landmark Hindi drama that explores the destructive power of obsession, control, and rigid discipline within a family. Review: A Psychological Masterpiece
If you're looking for a PDF download of a specific natak or literary piece, I recommend checking online libraries, digital archives, or platforms dedicated to South Asian literature and theater. They might have more detailed information or resources related to "Anjo Didi Natak."
I should also consider that they might be looking for academic or educational resources. Maybe it's a textbook or a drama script used in schools. If that's the case, there could be educational websites that offer it legally.