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George Glauberman and also Jon Alperin and George Glauberman together have written papers on this topic in rcent recent years. One example is: "A note on abelian subgroups of p-groups." Groups St. Andrews 2005. Vol. 2, 445–447, London Math. Soc. Lecture Note Ser., 340, Cambridge Univ. Press, Cambridge, 2007.

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George Glauberman and also Jon Alperin and George Glauberman together have written papers on this sort of question topic in recent rcent years(check out Mathscinet if you have access to that). One example is: "A note on abelian subgroups of p-groups." Groups St. Andrews 2005. Vol. 2, 445–447, London Math. Soc. Lecture Note Ser., 340, Cambridge Univ. Press, Cambridge, 2007.

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George Glauberman and also Jon Alperin and George Glauberman together have written papers on this sort of question in recent years (check out Mathscinet if you have access to that).