TY  - BOOK
AU  - Richardson, E.G
TI  - Ultrasonic physics
U1  - 534.55 
PY  - 1962///
CY  - New York
PB  - Elseiver Publishing Company
KW  - Physics
KW  - Ultrasound
KW  - Smoke method
KW  - Propagation of gases
KW  - Propagation of liquids
ER  -