@book{2552,
	author = {Merrill M. Ray},
	title = {Environmental Epidemiology Principles & Methods},
	publisher = {Jones & Bartlet,},
	year = {2009.},
	address = {India:,},
	url = {https://www.sapnaonline.com/books/environmental-epidemiology-principles-methods-ray-m-9380108109-9789380108100}
}