@book{8254,
	author = {WHO Study Group on Recommended Health-Based Limits in Occupational Exposure to Heavy Metals (1979 : Geneva). and World Health Organization},
	title = {Recommended health-based limits in occupational exposure to heavy metals : report of a WHO study group [meeting held in Geneva from 5 to 11 June 1979].},
	publisher = {World Health Organization,},
	year = {1980.},
	series = {(WHO technical report series ; 647)},
	address = {Geneva : }
}