000 00304nam a2200121Ia 4500
008 221001s1977 xx 000 0 eng d
082 _a320.1 AGG
100 _aAggarwal, Navin Narayan
245 0 _aRajnitik siddhant
260 _aDelhi
_bPragati Publications
_c1977
300 _a385p.
942 _2ddc
_cBK
999 _c21740
_d21740