000 00302nam a2200121Ia 4500
008 221001s1975 xx 000 0 eng d
082 _a338.9 AGG (H)
100 _aAggarwal, Amarnath
245 0 _aAarthik aayojan ke siddhant
260 _aDelhi
_bMacmillan
_c1975
300 _a187p.
942 _2ddc
_cBK
999 _c16730
_d16730