Marquis Pierre Simon de 1749-1827
"Laplace Pierre Simon de." YourDictionary, n.d. Web. 23 June 2018. <http://www.yourdictionary.com/laplace-pierre-simon-de>.
Laplace Pierre Simon de. (n.d.). Retrieved June 23rd, 2018, from http://www.yourdictionary.com/laplace-pierre-simon-de
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