Bagumian Olena Valentynivna. Textual Situation "Social Security" from a Cognitive Perspective (A Study of Different Functional Styles in Modern English) : к.філол.н. : spec.. 10.02.04 - Германські мови : presented. 2004-02-26; popup.evolution: .; Kyiv National Linguistic University. – , 0404U000800.

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