Dr. Madhusudan Mishra (1933), M. A., Ph. D. is a former Dy. Director of Rashtriya Sanskrit Sansthan, Delhi. He taught Sanskrit in Goenka College, Sitamarhi, Bihar and Frankfurt University, Germany. He knows all the stages of Indo-Aryan from Vedic to Hindi. He has authored eighteen books. His present interest is Indus language and civilization.