TY  - GEN
AU  - Lettieri, Thomas R
AU  - Hembree, Gary G
C2  - , National Institute of Standards and Technology, Gaithersburg, MD
DA  - 1988-01-01 05:01:00
DO  - https://doi.org/10.6028/NBS.IR.87-3730
LA  - en
PB  - , National Institute of Standards and Technology, Gaithersburg, MD
PY  - 1988
TI  - Certification of NBS SRM 1691: 0.3�m-diameter polystyrene spheres:
ER  -