New York Tribune.(New York, NY[removed]p 2].

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Date: 2009-02-27 16:22:05 Natural logarithm Logarithms Charles Frohman Ln		New York Tribune.(New York, NY[removed]p 2]. Add to Reading List Source URL: chroniclingamerica.loc.gov Download Document from Source Website File Size: 1.015,98 KB Share Document on Facebook