Discoverers Websites
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World History : HyperHistory
World History Online navigates through 3 000 years of world history, world timelines of civilizations (plus maps), people and world events.
833,419 
$ 1,680.00
The Naked Eye Planets in the Night Sky (and how to identify them)
Describes the appearance and movements of the planets in the dawn, dusk and night sky and what can be seen in binoculars & small telescopes. With planet position charts,...
1,249,588 $ 960.00