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Down Comes the Rain (Let's-Read-and-Find-Out Science, 2ܰ) 6~10
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Running on Sunshine: How Does Solar Energy Work? (Let's-Read-and-Find-Out Science, Level 2) 6~10
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How People Learned to Fly (Let'S-Read-And-Find-Out Science. Stage 2) 8~12
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The Sun: Our Nearest Star (Let's-Read-and-Find-Out Science, Stage 2) 6~10
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4,200
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4,200
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4,200
|
4,200
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Every Buddy Counts (Mathstart, Level 1, ۹) 4~7
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One...Two...Three...Sassafras! (Mathstart, Level 1, ۹) 4~7
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3,900
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3,900
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