Chemical carcinogenesis: a view at the end of the first half-century.

@article{Coombs1980ChemicalCA,
  title={Chemical carcinogenesis: a view at the end of the first half-century.},
  author={Maurice M. Coombs},
  journal={The Journal of pathology},
  year={1980},
  volume={130 2},
  pages={117-46}
}