000			00357nam a2200157Ia 4500
008			131223s9999 xx 000 0 und d
040			_aISI KOLKATA
041			_aEnglish
082			_a514 _bP317
100			_aPatterson E M
245			_aTopology
260			_aLondon _bOliver and Boyd _c1956
300			_aviii,128p
650			_aTopology
942			_cBK
999			_c33685 _d33685