TY  - GEN
AU  - Mann, W B
AU  - Garfinkel, S B
C2  - , National Institute of Standards and Technology, Gaithersburg, MD
DA  - 1970-01-01 05:01:00
DO  - https://doi.org/10.6028/NBS.SP.331
LA  - en
PB  - , National Institute of Standards and Technology, Gaithersburg, MD
PY  - 1970
TI  - Radioactivity calibration standards:
ER  -