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YouTube - Carl
Sagan
En la orilla del océano cósmico Cpt. 01 Clip 1 de 7
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www.youtube.com/watch
youtube
sagan
universo
cmc
origen_universo
animació
video
shared by
rmollap Rafa
on 17 May 10
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[1] Carl
Sagan
oceano cosmico 4/7 - YouTube
- 1 views
www.youtube.com/watch
cmc
universo
video
youtube
eratostenes
terra
radio
shared by
rmollap Rafa
on 11 Jan 14
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lluvia ácida
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www.sagan-gea.org/...Hoja13.htm
cmc
sostenibilidad
contaminación
agua
lluvia_ácida
shared by
rmollap Rafa
on 16 Mar 09
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Cached
rmollap Rafa
on 16 Mar 09
reaccions químiques que donen lloc a la pluja àcida
reaccions químiques que donen lloc a la pluja àcida
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