Umesh Kumar Singh & Diwakar Mishra books & textbook
Science and Technology in Ancient Indian Texts
Bal Ram Singh Girish Nath Jha Umesh Kumar Singh & Diwakar Mishra
D.K. Printworld (P) Ltd. /2012-03-01 Hardcover / 286 Pages
isbn-10: 8124606323 / isbn-13: 9788124606322