000 00334nam a2200109 4500
245 _aIntroduction to homotopy theory
_cP.J. Hilton
100 _aHilton, P.J.
260 _aCambridge
_bUniversity Press
_c1953
300 _a142p.; 22cm.-
490 _aCambridge tracts in mathematics and mathematical physics; no.43
082 _a514.24
_bHIL
999 _c23613
_d23613