TY  - BOOK
AU  - Beyer,Robert T.
AU  - Letcher,Stephen V.
TI  - Physical ultrasonics
T2  - Pure and applied physics: a series of monographs and textbooks
SN  - 0120950502
U1  - 534.5/5 
PY  - 1969///
CY  - New York
PB  - Academic Press
KW  - Ultrasonics
ER  -