TY  - RPRT
TI  - Letter Circular 678: luminous and fluorescent paints (replacing Letter Circular 336)
PY  - 1942
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - LCIRC 678
DO  - 10.6028/NBS.LCIRC.678
ER  -