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Естественные науки, 2012, №2 (39) [электронный ресурс]: Журнал. — 1. — Астрахань: ФГБОУ ВПО Астраханский государственный университет, 2012 — 231 с. — Аспирантура. — <URL:https://znanium.com/catalog/document?id=210900>. — <URL:https://znanium.com/cover/0423/423381.jpg>.
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