TY  - RPRT
TI  - Circular of the Bureau of Standards no. 3 e3: design and test of standards of mass
PY  - 1918
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS CIRC 3e3
DO  - 10.6028/NBS.CIRC.3e3
ER  -