TY  - RPRT
TI  - Monthly news bulletin of Commercial Standards Group, Bureau of Standards December 15, 1928 
AU  - Tillman, S F
PY  - 1928
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS CS 45
DO  - 10.6028/NBS.CS.45
ER  -