A QR code linking to our element videos on YouTube. Please print it out as big as possible and stick it up somewhere... for higher-res go to www.flickr.com/photos/periodicvideos/5912075438/sizes/o/i...
Periodic Table of QR codes
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Ciencias
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QR codes
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Tabla Periódica
martes, 20 de diciembre de 2011
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