Fluorides [WHO Task Group on environmental health criteria for fluorides met in Beijing, People's Republic of China, on 28 May -1 June 2001] [Texte imprimé] / first draft by R. Liteplo...[et al.] ; published under the sponsorship of the United Nations Environment Programme, the International Labour Organization and the World Health Organization, and produced within the framework of the Inter-Organization Programme for the Sound Management of Chemicals