John Philip Holland - Wikipedia
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Clare People: John P. Holland (1841-1914)
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Puckle/Holland Family Tree
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John Philip Holland | American inventor | Britannica
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Irish Genealogy, Ancestry, & Family History Resources | IrishCentral.com
John Philip Holland
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John Philip Holland Biography, Birthday. Awards & Facts About John Philip Holland
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RTÉ Archives | Technology | Homemade Submarine
File:John Philip Holland.png - Wikimedia Commons
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John Philip Holland: Irish inventor of the submarine
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How to draw family tree like in website http://phdtree.org/scholar/ng-andrew-y/ by TikZ? - TeX - LaTeX Stack Exchange
Timeline | John Philip Holland
