Media type: E-Article Title: Christiaan Huygens: April 14, 1629 June 8, 1695 Contributor: Sanford, Vera Published: National Council of Teachers of Mathematics, 1933 Published in: The Mathematics Teacher, 26 (1933) 1, Seite 52-4 Language: English ISSN: 0025-5769 Origination: Footnote: