TY - RPRT TI - Chemical carcinogenesis. AU - C Heidelberger PY - 1977 DO - 10.1002/1097-0142(197707)40:1+<430::aid-cncr2820400703>3.0.co;2-b UR - https://pubmed.ncbi.nlm.nih.gov/328130/ ID - 328130 ER -