Proceedings of Yerevan State University
Proceedings of the YSU, Series Geology and Geography 2017, volum 51, № 2
Proceedings of the YSU, Series Geology and Geography 2017, volum 51, № 2

Proceedings of the YSU, Chemistry and Biology 2017, volum 51, № 2
Proceedings of the YSU, Chemistry and Biology 2017, volum 51, № 2

Proceedings of the YSU, Physical and Mathematical Sciences 2017, volum 51, № 2
Proceedings of the YSU, Physical and Mathematical Sciences 2017, volum 51, № 2

Proceedings of the YSU, Series Geology and Geography 2017, volum 51, № 1
Proceedings of the YSU, Series Geology and Geography 2017, volum 51, № 1

Proceedings of the YSU, Chemistry and Biology 2017, volum 51, № 1
Proceedings of the YSU, Chemistry and Biology 2017, volum 51, № 1

Proceedings of the YSU, Physical and Mathematical Sciences 2017, volum 51, № 1
Proceedings of the YSU, Physical and Mathematical Sciences 2017, volum 51, № 1

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