TY  - RPRT
TI  - Circular of the Bureau of Standards no. 389: the making of mirrors by the deposition of metal on glass
PY  - 1931
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS CIRC 389
DO  - 10.6028/NBS.CIRC.389
ER  -