TY  - RPRT
TI  - Circular of the Bureau of Standards no. 24 6th edition: publications of the Bureau of Standards
PY  - 1922
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS CIRC 24e6
DO  - 10.6028/NBS.CIRC.24e6
ER  -