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| У9 | | Y20 | Yankovskiy, M.
Innovative and classical theories of catastrophes and ekonomic crises [Текст] : Monograph / M. Yankovskiy, Y. Makogon, O. Ryabchyn. — Donetsk : International Economics Departament, Donetsk National University, 2010. — 303s. | |
| | ISBN 978-966-2008-27-2 | |
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