resources

02/16/2010 14:41

 

 

 

 

 

                                recorces for my essay:                                                                                                         https://www.nasa.gov/worldbook/pluto_worldbook.html

 

https://www.enchantedlearning.com/subjects/astronomy/planets/pluto/

https://nineplanets.org/pluto.htm

https://www.nasa.gov/vision/universe/solarsystem/hubble_pluto.html

 

 

recorces for henry norris russell:

 

   https://etcweb.princeton.edu/CampusWWW/Companion/russell_henry.html

https://www.answers.com/topic/henry-norris-russell

https://www.infoplease.com/ce6/people/A0842713.html

 

 

 

 

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