000 002750000a22001210004500
245 _aIntroduction to topology
100 _aMansfield, Maynard J.
260 _aNew York
_bVan Nostrand
_c1963
300 _ax, 116p.
080 _a513.83
_bM3
041 _aEN
942 _cBK
999 _c53257
_d53257