TY - BOOK AU - Gupta, Piyush AU - Ghai, O.P. TI - Textbook of preventive and social medicine SN - 81-239-1457-1 U1 - 613 21st PY - 2007/// CY - New Delhi PB - CBS Publishers and Distributors KW - PROMOTION OF HEALTH; PREVENTION OF DISEASES; PUBLIC HEALTHCARE ER -