000 00273nam a2200121Ia 4500
100 _aMarvin Gore
245 _aElements of Systems Analysis
250 _a3rd
260 _c1983
_bGalgotia Booksource
_aNew Delhi
300 _axxii+544
700 _aJohn Stubbe
942 _cBK
999 _c12245
_d12245