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发表于2024-11-22
Biology Experiments for Children pdf epub mobi txt 電子書 下載 2024
Cells, using a microscope, plant life, animals; 77 experiments involve growing protozoa, bacteria, building a terrarium, growing seeds in a sponge, studying spider web formation, similar material. About half the experiments require a microscope. Over 100 illustrations
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Biology Experiments for Children pdf epub mobi txt 電子書 下載 2024