沃新书屋 - Biology Experiments for Children - 作者:Hanauer, Ethel R.

Hanauer, Ethel R.

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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