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The Oxford Biography Index is an accurate index of notable people from throughout history – their names, dates, and fields of activity. References to full text articles are also provided, and many are available to public library members simply by inputting their library card number.

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Oxford Biography Index entry

James Hann

Hann, James (1799–1856), mechanical engineer and mathematician

Oxford Biography Index Number 101012206 [what is this?]
http://www.oxforddnb.com/index/101012206/James-Hann     Primary authority: Oxford DNB

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Oxford Dictionary of National Biography


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