000 00275nam a2200121Ia 4500
008 230222s9999 xx 000 0 und d
082 _a513.83
100 _aSheldon W Davis
245 0 _aTopology
250 _a1
260 _bTata Mcgraw Hill, New Delhi
_c2006
942 _cBK
999 _c17375
_d17375