TY  - RPRT
TI  - Circular of the Bureau of Standards no. 237: United States government master specification for low-pressure spiral gland packing
PY  - 1925
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS CIRC 237
DO  - 10.6028/NBS.CIRC.237
ER  -