TY  - RPRT
TI  - Standard Reference Materials : SRM 1470 /
AU  - Martin, Gordon M
AU  - Barnes, John D
PY  - 1979
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - NBS SP 260-58
DO  - 10.6028/NBS.SP.260-58
ER  -