000 00289nam a2200121Ia 4500
008 221001s1985 xx 000 0 eng d
082 _a330 DHI
100 _aDhingra, Ishwar
245 0 _aArthik siddhant
260 _aDelhi
_bSultan Chand
_c1985
300 _aiii, 239p.
942 _2ddc
_cBK
999 _c23659
_d23659