TY  - RPRT
TI  - A tier system approach to mutagen testing.
AU  - W G Flamm
PY  - 1974
DO  - 10.1016/s0027-5107(74)80030-8
UR  - https://pubmed.ncbi.nlm.nih.gov/4604048/
ID  - 4604048
ER  -