TY  - RPRT
TI  - Certification of NBS SRM 1691 : 0.3-[mu]m-diameter polystyrene spheres
AU  - Lettleri, Thomas R
AU  - Hembree, Gary G
PY  - 1988
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 88-3730
DO  - 10.6028/NBS.IR.88-3730
ER  -