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The Mediums ' Book — Le Livre des Médiums , in French ) , is a book by Allan Kardec published in 1861 , second of the five Fundamental Works of Spiritism — the spiritualist philosophy Kardec had been publishing — being the tome in which the experimental and investigative features of the doctrine were presented , explained and taught .
 Allan Kardec, Kardec
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Allan Kardec, Kardec