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In this new Level 3 Reader, the captivating story of Helen Keller unfolds. Children ab…
From Aristotle and Thomas Aquinas, to Adam Smith and John Maynard Keynes, to the top e…
Thirteen-year-old Anne Frank went into hiding from the Nazis with her family in 1942. …
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Discover the fascinating origins and meanings of over 2,000 signs and symbols from myt…
The most comprehensive and easy-to-use pocket guide to the reptiles and amphibians of …
How does memory work? Who is the "distractor" in your family? What was the &…
Explore answers to questions on 70 topics in the areas of matter, physics, energy, che…
A dazzling visual guide to precious and semiprecious stones, organic gems, and preciou…
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