TY  - RPRT
TI  - Ultrasonic methods for determination of mechanical properties of dental materials : progress report
AU  - Dickson, George
PY  - 1969
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS RPT 10177
DO  - 10.6028/NBS.RPT.10177
ER  -