TY  - RPRT
TI  - Circular of the Bureau of Standards no. 270: United States government master specification for mercerized cotton airplane cloth, grade A
PY  - 1925
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS CIRC 270
DO  - 10.6028/NBS.CIRC.270
ER  -