FREDERICK, Robert creator text Grade 7-9 xx 9999 monographic und eng

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45 hlm. 29 cm Ever wondered how our life would be without electric bulbs, fans and radios? Can you imagine a world without televisions sets and computers? How did people beat the heat without air conditioners and travel without cars? Read more about their fascinating lives and intersting stories that led to the incredible inventions listed in this book. 0 923. 0-7554-3408-0 260914 20260914083118.0