TY  - RPRT
TI  - An In-line density and viscosity sensor 
AU  - Olsen, L O
AU  - Ruegg, F W
PY  - 1974
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 74-620
DO  - 10.6028/NBS.IR.74-620
ER  -