TY  - RPRT
TI  - Circular of the Bureau of Standards no. 275: United States government master specification for builders hardware (except for marine use or for hollow metal doors)
PY  - 1925
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS CIRC 275
DO  - 10.6028/NBS.CIRC.275
ER  -