History of Indian Currency

P.S. Sindhu is Associate Professor in Chemistry, Hansraj College, University of Delhi, Delhi. He did his M.Sc. in Chemistry from Indian Institute of Technology, Delhi, in 1966 and Ph.D. from University of Delhi, under the guidance of Prof. R.P. Mitra in 1975. He has been teaching since 1969. His areas of interest include molecular spectroscopy, electrochemistry, clay minerals and environmental chemistry. He is also running, as President, NGO Vatavaran which works for pollution free environment. Dr. Sindhu has published eight research papers, many articles, and authored fourteen books. Vatavaran has also published some of his reports on pollution and pollution control.