1. Adams, E. M., H. C. Spencer, V. K. Rowe and D. D. McCollister: Vapor toxicity of 1,1,1-trichloroethane (methylchloroform) determined by experiments on laboratory animals. Arch. industr. Hyg. 1, 225 (1950).
2. Ambrosi, L., e A. Ciiiantera: Quota serica del piombo in soggetti normali e saturnini. Folia med. (Napoli) 64, 129 (1962).
3. Asxe, W., E. Largent, F. Dutra, D. Hubbard and M. Blackstone: Behavior of mercury in the animal organism following inhalation. Arch. industr. Hyg. 7, 19 (1953).
4. Aub, J. C., L. Fairhall, A. S. Minot and P. Reznikoff: Lead poisoning. Medicine (Baltimore) 4, 1 (1925).
5. Benard, H., A. Gajdos et M. Gajdos-Török: Action de certains inhibiteurs et activateurs sur le métabolisme du porphobilinogène. C. R. Sec. Biol. (Paris) 149, 312 (1955).