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020 _a9780511657474
037 _aEBOOK
040 _aCRL
_beng
_cCRL
041 _aeng
_2eng
084 _qCRL
100 _aGrandis
_9876608
245 0 _aDirected Algebraic Topology
260 _bCambridge University Press
260 _bCambridge University Press
260 _c2010
856 _uhttps://doi.org/10.1017/CBO9780511657474
942 _cEBOOK
999 _c1475213
_d1475213