@book{35967,
	author = {Park, K.},
	title = {Park's Textbook of preventive and social medicine.},
	publisher = {Banarsidas Bhanot,},
	year = {1997.},
	address = {Jabalpur :},
	edition = {15th ed.},
	note = {"The twelfth edition published under the title Textbook of preventive and social medicine."--Title page verso.
Includes index.}
}