TY  - RPRT
TI  - Standard Reference Materials : Guide to United States reference materials/
AU  - Plebanski, Tomasz
AU  - Cali, J Paul
PY  - 1978
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - NBS SP 260-57
DO  - 10.6028/NBS.SP.260-57
ER  -