text: 6 Ibid., dix-huitième année, Supplément d'octobre, novembre et décembre 196.'.J. 6 Ibid .• vingtième année, Supplément d'avril, mai et juin 1965, 
analysis: The text appears to be a citation from a publication, likely a journal or a book, with references to specific issues and dates. The use of "Supplément" suggests that it may be a scholarly or academic publication. Given the format and language, it is likely that the content is related to a specific field of study or discipline.