| Specification: | An Engaging 16-Volume Set That Explain scientic Topics:
- Universe
- Rock and Minerals
- Volcanos and Earthquakes
- Weather and Climate
- Evolution and Genetics
- Plans, Algae, and Fungi
- Invertebrates
- Fish and Amphibians
- Reptiles and Dinosaurs
- Birds
- Mammals
- Human Body I, II
- Energy and Movement
- Technology
- Space Exploration |
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