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Book Description Hardcover. Condition: New. HardCover. Pub Date: 2021-04-01 Pages: 126 Language: Chinese Publisher: Publishing House of Electronics Industry Follow in the footsteps of the clever and adventurous boy Leo. we will enter a world of strange physics.?Here. things that seem to have no connection with each other have a wonderful connection. and whimsical ideas can always be transformed into useful physical inventions. The way of life and work of mankind for thousands of years is gradually changing.?The book includes 4 knowledg. Seller Inventory # NV009044