TY  - RPRT
TI  - Circular of the Bureau of Standards no. 423: microscopic methods used in identifying commercial fibers
AU  - Plitt, Thora M
PY  - 1939
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS CIRC 423
DO  - 10.6028/NBS.CIRC.423
ER  -