TY  - RPRT
TI  - The need for ultrapurity.
AU  - B Rubin
PY  - 1965
DO  - 10.1111/j.1749-6632.1965.tb40734.x
UR  - https://pubmed.ncbi.nlm.nih.gov/5225697/
ID  - 5225697
ER  -