TY  - RPRT
TI  - Standard Reference Materials : Methods for the chemical analysis of NBS copper-base spectrochemical standards/
AU  - Bell, Rosemond K
PY  - 1965
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - NBS SP 260-7
DO  - 10.6028/NBS.SP.260-7
ER  -