TY  - RPRT
TI  - 1950 supplement to screw-thread standards for federal services 1944 
PY  - 1951
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS HB 28supp1950
DO  - 10.6028/NBS.HB.28supp1950
ER  -