TY  - RPRT
TI  - Measuring radioactive materials.
AU  - S B Garfinkel
AU  - W B Mann
PY  - 1971
DO  - 10.1126/science.171.3970.433
UR  - https://pubmed.ncbi.nlm.nih.gov/5539200/
ID  - 5539200
ER  -