Zakharchuk Iryna Oleksandrivna. Development and establishment of category of negation in the English language of VII-XVII centuries: synchrony and diachrony. : к.філол.н. : spec.. 10.02.04 - Германські мови : presented. 2017-03-02; popup.evolution: .; Ivan Franko National University of Lviv. – , 0417U000683.

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