000
00263nam a2200121Ia 4500
003
LDD
040
_c
LDD
041
_a
en
245
0
_a
Physics Education
260
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IOP Publishing Ltd.
_b
Bristol
_c
1 Jan-31 Dec,1997
362
_a
32-32
_b
01-Jun
942
_2
ddc
_c
J
999
_c
187415
_d
187415