Voyage in Space page116.jpg
Herbert Hall Turner
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Voyage in Space page116, The Victoria Telescope at the Cape of Good Hope., Victoria refractor
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Voyage in Space page116, Royal Observatory, Cape of Good Hope, Grubb telescopes, Refracting telescopes, A Voyage in Space
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ja
宇宙旅行、喜望峰のヴィクトリア望遠鏡、ビクトリア屈折望遠鏡
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ja
宇宙旅行、王立天文台、喜望峰、グラブ望遠鏡、屈折望遠鏡、宇宙旅行
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refracting telescope voyage galilean telescope refract cape of good hope refraction refractivity refractive