Lohardaga, March 16 -- Deputy Commissioner Dr. Waghmare Prasad Krishna said that studying books is the best way for better knowledge and proper development of the brain. Today, many types of content are available to us through social media but they are not reliable and tested on the right criteria. Books provide an opportunity to better understand history, economics and things around us. The book develops your personality in the right way. Knowledge of social media is limited. The Deputy Commissioner said these things while inaugurating the district level book fair-cum-science exhibition at the Collectorate grounds on Friday. Earlier, the fair was inaugurated by the Deputy Commissioner by cutting the ribbon and lighting the lamp. On the occ...