000 00281nam a2200109Ia 4500
008 190826s9999 xx 000 0 und d
082 _a621.319 VAL
100 _aValkenburg, M.E.Van
245 0 _aNetwork Analysis
260 _aNew Delhi
_bPHI Learning Privet Limited
942 _cBOOK
999 _c54412
_d54412