000 00288nam a2200121Ia 4500
008 221001s1989 xx 000 0 eng d
082 _a657.45 MIT
100 _aMittal, D. K.
245 0 _aAnkekshan ke tatva
260 _aNew Delhi
_bS. Chand
_c1989
300 _a364p.
942 _2ddc
_cBK
999 _c12306
_d12306