Scientific American (informally abbreviated to SciAm) is a popular science magazine published since August 28, 1845, which according to the magazine makes it the oldest continuously published magazine in the United States.
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http://www.rarefile.net/m03zjt2aopul/SAmerican.September2013.rar
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http://dizzcloud.com/dl/165p405/SAmerican.September2013.rar
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