TY  - RPRT
TI  - Standard reference materials : standardization of pH measurements
AU  - Wu, Yung Chi
AU  - Koch, William F
AU  - Durst, Richard A
PY  - 1988
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS SP 260-53e1988
DO  - 10.6028/NBS.SP.260-53e1988
ER  -