000
00241nam a22000857a 4500
008
210303b ||||| |||| 00| 0 eng d
050
_a
QC721
245
_a
Physical electronics
_c
HEMENWAY, CURTS L.
942
_2
lcc
_h
QC721 .H46 1962
999
_c
1341
_d
1341