000 00331nam a2200133Ia 4500
008 230720s9999||||xx |||||||||||||| ||und||
041 _aeng
082 _aBK
_bN74 VAL
100 _a Valkenburg, M.E. Van
_9437
245 0 _a Network analysis
_c Valkenburg, M.E. Van
250 _a 3rd ed.
260 _b PHI
_c1974
942 _cBK
999 _c13878
_d13878