000 00287nam a2200121Ia 4500
008 190216s9999||||xx |||||||||||||| ||und||
100 _aGupta P K & Hira D S
245 0 _aOperations Research
260 _bNull
_c2000
300 _a1055p
650 _aOperation Research
942 _cBK
999 _c5856
_d5856