000
00244nam a22000857a 4500
008
210304b ||||| |||| 00| 0 eng d
050
_a
QC244 .B49
245
_a
Physical ultrasonics
_c
BEYER, ROBERT T.
942
_2
lcc
_h
QC244 .B49 1969
999
_c
1546
_d
1546