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http://www.portaltotheuniverse.org/blogs/posts/view/59438/

http://www.portaltotheuniverse.org/blogs/posts/view/56588/

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Anchor text: Who first published a Hertzsprung-Russell diagram? Hertzsprung or Russell? Answer: neither!

Anchor text: EAAE News on Portal to the Universe

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http://www.portaltotheuniverse.org/blogs/posts/view/368993/