Panbudi  (Paperback, Marathi, Dr. Madhusudan Dingankar)

Everyone of us have curiosity about submarine that works beneath water. The book world of submarine solves this purpose for the first time in Marathi. The invention of submarine formation of submarine, the development in the techinique of building, the mission and work operated submarine is told by Padmakar Deshpande in this book. The writer is lieu tanant.