@book{37982,
	title = {Environmental health criteria},
	publisher = {World Health Organization,  },
	year = {1977},
	address = {Geneva:  },
	note = {4. Oxides of nitrogen
7. Photochemical oxidants
8. Sulfur oxides and suspended particulate matter
10. Carbon disulfide
16. Radiofrequency and microwaves
}
}