TY  - RPRT
TI  - Standard Reference Materials : Portland cement chemical composition standards (blending, packaging, and testing)/
AU  - Kanare, Howard M
AU  - Kirby, R Keith
PY  - 1988
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - NBS SP 260-110
DO  - 10.6028/NBS.SP.260-110
ER  -