@book{1182144,
	author = {VIDYA' RATAN.},
	title = {HAND BOOK OF PREVENTIVE SOCIAL MEDICINE(BOOK PRICE PAID RERCEPIT NO3719 DATED 16-7-1998)},
	publisher = {JAYPEE BROTHERS},
	year = {1990},
	address = {NEW DELHI},
	edition = {1}
}