Many university students search for PDFs of rare books. "Abhisarika 3" could be part of a series of translated plays or a Ph.D. dissertation comparing the Abhisarika to the Greek Maenads or the Christian Magdalen.
What to expect in the PDF: Footnotes, Sanskrit transliterations, scholarly analysis of meter (Chanda), and a bibliography. abhisarika 3 pdf
The author of Abhisarika 3 (if still living) or their estate may hold the copyright. Typically, copyright in India lasts for 60 years after the author's death. Since this book is likely from the late 1990s, it is still under copyright. Many university students search for PDFs of rare books
However, there is a moral argument for abandonware: If the publisher has gone out of business, and the book has been out of print for over a decade, and no eBook version exists for sale, downloading a scanned PDF does not take a sale away from anyone. It preserves culture. What to expect in the PDF: Footnotes, Sanskrit
Best practice: If you download the Abhisarika 3 PDF and love it, try to donate to a Bengali literary preservation society or buy any other book by the same author that is in print to support them financially.
Do not rely on random file-sharing sites. Try these first: