TY  - RPRT
TI  - Circular of the Bureau of Standards no. 254: United States government master specification for cloth-inserted ring cushions
PY  - 1925
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS CIRC 254
DO  - 10.6028/NBS.CIRC.254
ER  -