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2. [Projection of light through a telescopic lense]
3. [Phase of the moon]
4. [Binoculars and a telescope]
5. [A telescope and components]
6. [Telescope with four diagrams illustrating the passage of light through the scope]
7. [Telescope and components]
8. [Genetics]
9. [Insects - Injurious & Beneficial]
10. [Insects - Injurious & Beneficial]
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