Mahajan, B K Textbook of preventive and social medicine - 4th ed. - New Delhi Jaypee Brothers Medical Publishers 2013 - xvii, 703 p. 3559 01/08/2019 APD19/1099891 09/08/2019 Pharmaceutical Sciences (Non- Plan) ISBN: RS1050 Dewey Class. No.: 616.0019 M278T(4)