TY  - RPRT
TI  - Circular of the Bureau of Standards no. 565: techniques for ruling and etching precise scales in glass and their reproduction by photoetching with a new light-sensitive resist
AU  - Davis, Raymond
PY  - 1955
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS CIRC 565
DO  - 10.6028/NBS.CIRC.565
ER  -