000
00261nam a22000977a 4500
008
120721b xxu||||| |||| 00| 0 eng d
050
_a
QC21
_b
.T46 1963
245
_a
GENERAL PHYSICS AND SOUND
300
_a
18CM
942
_2
lcc
_c
BK
_h
QC21.T46 1963
999
_c
65150
_d
65150