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bookmarks:
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| main | ongoing | archive | private |
- the stratum of clouds
- geography
- the seven wonders of the world
- the moon's cycle
- the most expensive foods
- types of flowers
- the variety of plants
- most powerful women in history
- spirit animals
- the chinese new year
- how carbon dating works
- how hot air balloons work
- how bikes came about
jul 12 2012 ∞
jan 8 2013 +
jan 8 2013 +