TY  - RPRT
TI  - Circular of the Bureau of Standards no. 136 2nd edition: United States government specification for numbered cotton duck
PY  - 1924
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS CIRC 136e2
DO  - 10.6028/NBS.CIRC.136e2
ER  -