TY  - RPRT
TI  - Second naturally occurring beta-galactosidase in E. coli.
AU  - D L Hartl
AU  - B G Hall
PY  - 1974
DO  - 10.1038/248152a0
UR  - https://pubmed.ncbi.nlm.nih.gov/4594529/
ID  - 4594529
ER  -