000 00339nam a2200133Ia 4500
008 211215s9999 xx 000 0 und d
040 _cJayakar Knowledge Resource Centre
100 _aAlexandroff, Paul
245 0 _aElementary concepts of topology
250 _a1st
260 _bDover
_aNew York
_c1961
300 _a73p p.
942 _c1
999 _c67060
_d67060