000 00258nam a2200121Ia 4500
100 _aGalgotia
020 _a81-85623-01-5
942 _cBK
245 _aReasoning N Reasoning
260 _aGalgotia, New Delhi
_c1991
082 _a160 Gal
300 _aiii,304p
999 _c64847
_d64847