It was a sunny afternoon in the bustling city of Kolkata when a young law student, Rohan, stumbled upon a treasure trove of knowledge in the university library. As he browsed through the shelves, his eyes landed on a book titled "Introduction to Indian Constitution" by D.D. Basu. The cover was worn out, but the title seemed to beckon him.

The Introduction to the Constitution of India is a copyrighted work. The original publisher is (formerly Butterworths/Wadhwa). DD Basu passed away in 1997, but copyright typically extends for 60 years after the author’s death (until 2057 in India under the Copyright Act, 1957).

India is a "Union of States." Basu analyses the federal structure, distinguishing it from a confederation.

From that day on, Rohan carried the book with him wherever he went, referring to it often as he explored the vast expanse of Indian constitutional law. And as he grew into a successful lawyer, he made it a point to recommend "Introduction to Indian Constitution" by D.D. Basu to every young law student he met, ensuring that the legacy of this remarkable book continued to inspire generations to come.