000 00274nam a2200121Ia 4500
008 220201s1976 xx 000 0 eng d
082 _bVAL
100 _aValkenburg Val, M.E.
245 0 _aNetwork Analysis
260 _bPrentice Hall
_c1976
300 _a571
942 _2ddc
999 _c20427
_d20427