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In memoriamHanna Neumann
This work was supported by the National Science Foundation, grant number GP 29437.
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Fuchs, L. Note on extensions of abelian groups by primary groups. Arch. Math 24, 1–5 (1973). https://doi.org/10.1007/BF01228162
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DOI: https://doi.org/10.1007/BF01228162