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1C_SCJ_5.1_Energy(1)_1

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1C_SCJ_5.1_Energy(1)_1

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1C_SCJ_5.1_Energy(2)_2

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1C_SCJ_5.1_Energy(2)_2

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1C_SCJ_5.1_Energy(3)_3

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1C_SCJ_5.1_Energy(3)_3

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1C_SCJ_5.1_Energy conservation_12

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1C_SCJ_5.1_Energy conservation_12

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1A_ SCIENCE_CH5.3_Energy sources_Bk_P.130-131

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1A_ SCIENCE_CH5.3_Energy sources_Bk_P.130-131

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1A_ SCIENCE_CH5.3_Energy sources_Bk_P.128-129

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1A_ SCIENCE_CH5.3_Energy sources_Bk_P.128-129

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1A_ SCIENCE_CH5.3_Energy sources_Bk_P.126-127

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1A_ SCIENCE_CH5.3_Energy sources_Bk_P.126-127

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1A_ SCIENCE_CH5.3_Energy sources_Bk_P.125

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1A_ SCIENCE_CH5.3_Energy sources_Bk_P.125

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1A_ SCIENCE_CH5.3_Energy sources_Bk_P.123-124

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1A_ SCIENCE_CH5.3_Energy sources_Bk_P.123-124

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