TY  - RPRT
TI  - Letter Circular 1007: artificial abrasives and abrasive products (replaces Letter Circular 917)
PY  - 1951
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - LCIRC 1007
DO  - 10.6028/NBS.LCIRC.1007
ER  -