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020 _a9780511666278
037 _aEBOOK
040 _aCRL
_beng
_cCRL
041 _aeng
_2eng
084 _qCRL
100 _aHilton
_9888414
245 3 _aAn Introduction to Homotopy Theory
260 _bCambridge University Press
260 _bCambridge University Press
260 _c1953
650 _aMathematics
_9888415
856 _uhttps://doi.org/10.1017/CBO9780511666278
942 _cEBOOK
999 _c1485908
_d1485908