SBR: Hindi Nationalism by Alok Rai is an important book to understand the history of Hindustani, Hindi and Urdu in India and also the politics around languages that still consumes a significant portion of our political, administrative and intellectual resources. Unfortunately, the book’s language is far too academic. The author can’t be faulted for it, however, because he hadn’t set out on writing a popular book. It was supposed to be scholarly. Another book of similar character targeted at lay people would be wonderful to have.
To read or not to read: Yes, if academic jargon and language don’t daunt you.
I can’t find the book on Amazon or Flipkart. So you will have to find it in some offline bookstore or write to the publishers.