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: 	Police and rescue workers transport an injured man on a stretcher after a train crashed at Once train station in Buenos Aires on February 22, 2012. At least 340 people were injured in the accident, authorities informed. AFP PHOTO / JUAN MABROMATA (Photo credit should read JUAN MABROMATA/AFP/Getty Images)
: 	Police and rescue workers transport an injured man on a stretcher after a train crashed at Once train station in Buenos Aires on February 22, 2012. At least 340 people were injured in the accident, authorities informed. AFP PHOTO / JUAN MABROMATA (Photo credit should read JUAN MABROMATA/AFP/Getty Images)

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    Accidente de trenes en Buenos Aires

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Accidente de trenes en Buenos Aires

El transporte público otra vez en la mira: un accidente ferroviario deja 50 muertos y más de 600 heridos.

Accidente de trenes en Buenos Aires

El transporte público otra vez en la mira: un accidente ferroviario deja 50 muertos y más de 600 heridos.