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041 0 _aeng
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245 1 0 _aVol. 97 No. 1
260 _c1975
773 1 8 _7nnas
_gVol. 97 No. 1
_tAmerican Journal of Mathematics. 1975
_w000012277
_x0002-9327
856 4 0 _uhttps://www.jstor.org/stable/10.2307/i340808
942 _cIS
999 _c12278
_d12278