Unlike international publishers (Routledge, Pearson) who release official e-books immediately, many Indian publishers (like Kalyani Publishers) have been slow to digitize. Consequently, the only way to get a digital copy often involves scanned, watermarked versions. An "exclusive" PDF implies a clean, searchable, text-based file without missing pages.
If you are looking for specific information from the book, let me know: Are you studying for a (like UPSC or NET)? population geography by rc chandna pdf exclusive