The first scientific series
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AL-8
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AL-8S
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AL-10
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AL-10S
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fx-8
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fx-10
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fx-11
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fx-15
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fx-17
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fx-20
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College-fx
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fx-21
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fx-31
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fx-29
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fx-39
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fx-101
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fx-19
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fx-102
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fx-360
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fx-105
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fx-110
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fx-120
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fx-135
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fx-140
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