Bangla Bhashar Bibortanmulak Ovidhan is a Historical Dictionary of the Bengali Language, where you can know all the history of the Bengali language. The Bengali language writer Golam Murshid authored this book, initially published in 2013 by the Bangla Academy. Are you interested in reading this book? Collect its 30 MB PDF copy from the below link. It is the second part of this book. This part contains a total of 1079 pages.