Proceedings of Yerevan State University
Proceedings of the YSU, Series Geology and Geography  2013 #3(232)
Proceedings of the YSU, Series Geology and Geography 2013 #3(232)

Proceedings of the YSU, Chemistry and Biology 2013 #3(232)
Proceedings of the YSU, Chemistry and Biology 2013 #3(232)

Proceedings of the YSU, Physical and Mathematical Sciences 2013 #3(232)
Proceedings of the YSU, Physical and Mathematical Sciences 2013 #3(232)

2013 #2(231)
2013 #2(231)

Proceedings of the YSU, Chemistry and Biology 2013 #2(231)
Proceedings of the YSU, Chemistry and Biology 2013 #2(231)

Proceedings of the YSU, Physical and Mathematical Sciences 2013 #2(231)
Proceedings of the YSU, Physical and Mathematical Sciences 2013 #2(231)

Proceedings of the YSU, Series Geology and Geography  2013  #1(230)
Proceedings of the YSU, Series Geology and Geography 2013 #1(230)

Proceedings of the YSU, Chemistry and Biology 2013 #1(230)
Proceedings of the YSU, Chemistry and Biology 2013 #1(230)

Proceedings of the YSU, Physical and Mathematical Sciences 2013 #1(230)
Proceedings of the YSU, Physical and Mathematical Sciences 2013 #1(230)

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