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Derrida 's interests crossed disciplinary boundaries , and his knowledge of a wide array of diverse material was reflected in the three collections of work published in 1967 : " Speech and Phenomena " , " Of Grammatology " ( initially submitted as a " Doctorat de spécialité " thesis under Maurice de Gandillac ) , and " Writing and Difference " .
 Derrida, Maurice de Gandillac
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Derrida, Maurice de Gandillac