TY  - RPRT
TI  - Circular of the Bureau of Standards no. 9 7th edition: testing of glass volumetric apparatus
PY  - 1914
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS CIRC 9e7
DO  - 10.6028/NBS.CIRC.9e7
ER  -