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K-gruppy Brunsa-Gubeladze dlya chetyrekhugol'noy piramidy - PDF (Russian)
Copyright (c) 2013 Popelenskiy F.Y., Prikhod'ko M.V.
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Copyright (c) 2013 Popelenskiy F.Y., Prikhod'ko M.V.
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.