TY  - RPRT
TI  - Circular of the Bureau of Standards no.47: units of weight and measure- definitions and tables of equivalents
PY  - 1914
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS CIRC 47
DO  - 10.6028/NBS.CIRC.47
ER  -