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Vladimir Alexandrovich Kondratiev (on the80 anniversary from the date of birth) - PDF (Russian)
Copyright (c) 2015 Astashova I., Pulkina L.
This work is licensed under a Creative Commons Attribution 4.0 International License.
Copyright (c) 2015 Astashova I., Pulkina L.
This work is licensed under a Creative Commons Attribution 4.0 International License.