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GaAs : DSC_3864
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GaAs : DSC_3866
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GaAs : DSC_3875
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GaAs : DSC_3877
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GaAs : DSC_3879
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GaAs : DSC_3888
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GaAs : DSC_3892
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GaAs : DSC_3902
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GaAs : DSC_3908
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GaAs : DSC_3911
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GaAs : DSC_3917
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GaAs : DSC_3919
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GaAs : DSC_3924
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GaAs : DSC_3927
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GaAs : DSC_3929
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GaAs : DSC_3950
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GaAs : DSC_3963
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GaAs : DSC_3968
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GaAs : DSC_3987
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GaAs : DSC_3993
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GaAs : DSC_4017
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GaAs : DSC_4021
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GaAs : DSC_4024
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GaAs : DSC_4026
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GaAs : DSC_4049
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GaAs : DSC_4073
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GaAs : DSC_4086
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GaAs : DSC_4111
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GaAs : DSC_4129
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GaAs : DSC_4134