TY  - RPRT
TI  - Circular of the Bureau of Standards no. 236: United States government master specification for cloth insertion rubber packing
PY  - 1925
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS CIRC 236
DO  - 10.6028/NBS.CIRC.236
ER  -