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Translated from Matematicheskie Zametki, Vol. 31, No. 3, pp. 443–446, March, 1982.
The author is grateful to A. V. Arkhangel'skii and S. P. Gul'ko for assistance with the note.
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Pestov, V.G. Embeddings and contractions of topological groups. Mathematical Notes of the Academy of Sciences of the USSR 31, 228–230 (1982). https://doi.org/10.1007/BF01145473
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DOI: https://doi.org/10.1007/BF01145473