000 00305nam a2200121Ia 4500
008 210212s9999||||xx |||||||||||||| ||und||
082 _a320H Agg.L7
100 _aAggrawal, Navin Narayan
245 0 _aRajnitik Siddhant
260 _c1977
_bPragati publications
_aDelhi
300 _a1-385p.
942 _cSU
999 _c77654
_d77654