TY  - RPRT
TI  - Urasonic pulse-echo measurements in teeth.
AU  - F E Barber
AU  - S Lees
AU  - R R Lobene
PY  - 1969
DO  - 10.1016/0003-9969(69)90166-6
UR  - https://pubmed.ncbi.nlm.nih.gov/5257202/
ID  - 5257202
ER  -