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1gan Gravesande, Willem Jacob 's, 1688-1742Location: Hesburgh Libraries, University of Notre Dame
Cyhoeddwyd 1737
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2gan Huygens, Christiaan, 1629-1695Awduron Eraill: “...Gravesande, Willem Jacob 's, 1688-1742...”
Cyhoeddwyd 1728
Location: John J. Burns Library, Boston College
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