Maharashtriya Jnanakosha 15 by Shridhar Venkatesh Ketkar is an encyclopedia that is mainly the first-ever Marathi language encyclopedia. Shridhar Venkatesh Ketkar was the chief editor of the encyclopedia and the book took 12 years to complete. This encyclopedia was published in a total of 23 volumes. From volume 06 to volume 21; these volumes contain articles that are arranged in alphabetical order. You can read the book offline by downloading the PDF file from here.