@book{2568,
	author = {Park, K.},
	title = {Park's textbook of preventive and social medicine /},
	publisher = {Banarsidas Bhanot,},
	year = {2007.},
	address = {Jabalpur :},
	edition = {Nineteenth edition},
	note = {"The twelfth edition published under the title Textbook of preventive andsocial medicine."--t.p. verso.}
}