Please observe. In the space of one hundred and seventy-six years the Lower Mississippi has shortened itself two hundred and forty-two miles. This is an average of a trifle over one mile and a third per year. Therefore, any calm person, who is not blind - PowerPoint PPT Presentation

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Please observe. In the space of one hundred and seventy-six years the Lower Mississippi has shortened itself two hundred and forty-two miles. This is an average of a trifle over one mile and a third per year. Therefore, any calm person, who is not blind

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Title: PowerPoint Presentation Author: Jan Velterop Last modified by: Charlie Rapple Created Date: 1/6/2009 2:31:15 PM Document presentation format – PowerPoint PPT presentation

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