000
00252nam a22000857a 4500
008
210226b ||||| |||| 00| 0 eng d
050
_a
QC173 .B45
245
_a
Perspectives of modern physics
_c
BEISER, ARTHUR
942
_2
lcc
_h
QC173 .B45 1969
999
_c
1019
_d
1019