Não informado. (2017). Dissertation Abstracts: Abstracts of dissertations and monographs in microfilm. University Microfilms.
Chicago-referens (17:e uppl.)Não informado. Dissertation Abstracts: Abstracts of Dissertations and Monographs in Microfilm. Ann Arbor, Mich: University Microfilms, 2017.
MLA-referens (8:e uppl.)Não informado. Dissertation Abstracts: Abstracts of Dissertations and Monographs in Microfilm. University Microfilms, 2017.
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