New concepts and developments in toxicology : proceedings of the Fourth International Congress of Toxicology held in Tokyo, Japan, July 21-25, 1986 / ed. P.L. Chambers, P. Gehring, F. Sakai

New concepts and developments in toxicology : proceedings of the Fourth International Congress of Toxicology held in Tokyo, Japan, July 21-25, 1986 / ed. P.L. Chambers, P. Gehring, F. Sakai