TY  - RPRT
TI  - Origin and function of penicillinase: a problem in biochemical evolution.
AU  - M R Pollock
PY  - 1967
DO  - 10.1136/bmj.4.5571.71
UR  - https://pubmed.ncbi.nlm.nih.gov/4963324/
ID  - 4963324
ER  -