Porivasha Kosh is a Bengali language book, wrote by the familiar Bengali language writer Suprakash Ray. Porivasha Kosh is a captivating book in the Bengali language initially published in 1958 by the great Bivodhoy Prokashoni. Are you looking for a free PDF copy of this book? It is here. The PDF copy of this book is about only 35 MB. Download it’s from the below download link and start your reading.