TY  - RPRT
TI  - Letter Circular 414: anti-dimming preparations for glass surfaces (replacing Letter Circular 242)
PY  - 1934
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - LCIRC 414
DO  - 10.6028/NBS.LCIRC.414
ER  -