One hundred thousand whys[youth version] 12 rolls for Pc 655f3b

1. Its content is very wide, to ask a friend introduced all kinds of ways of scientific knowledge and the text is not long, a shallow development, very He operators in the young readers cognitive style and reading characteristics.

2. The why "is China's first this popular edition of the encyclopedia, physics, chemistry, astronomy points weather, agriculture, physiological health 5 roll, issue five hundred) that is more than copies.

3. It spread knowledge, science popularization in play a positive role, influence generations on the road of science teenagers.

4. In recent years, dubbed the "why" books layer play in endlessly, put a lot of the attention of the frontier problem also into come in, greatly enrich the connotation of the brand.

5. China's young children's film version clubs in January 1961 film version.

6. It is not a book, but as a "set" a version of the works.

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