Molecular and cellular aspects of carcinogen screening tests : proceedings of a meeting held in Hanover, Federal Republic of Germany, 4-9 June 1979. - 371p. - IARC scientific publications ; no. 27. . Subjects--Topical Terms: Carcinogens--Toxicity--CongressesMutagens--Toxicity--CongressesCarcinogenicity tests--CongressesCell transformation, Neoplastic--CongressesMutagenicity tests--Congresses